Wednesday, June 8, 2011

June Vacation Chap 9.2 RATE (L4) Self-Paced Learning

1. Mathematics Textbook 1B
(a) Go through Chapter 9 (p9 to p11)
(b) Attempt Exercise 9.2 Q1 to Q10.
Enter your answers to Exercise 9.2 under Comments. Label your Answers with Question numbers.

2. ACELearning Portal: eLearning Portal
> Subject: Secondary 1 Express
> Additional Arithmetic
> Ratio, Rate and Speed: Choose Rate

(a) Go through video lessons: Rate, Average Rate, Example 1, Example 2
(b) Try Practice Drills on your own to check your understanding
Note: An email has been sent to all students via the AceLearning

15 comments:

  1. Answers:
    qn 1
    a) $3.50
    b) 72
    c) 47
    d) $8
    e) 4

    qn 2
    a) $23
    b) 920

    qn 3
    a)9
    b)$1.20

    qn 4
    a)87.5g
    b)0.7g

    qn 5
    a)$15
    b) $150

    qn 6
    a)$22.50
    b)$450

    qn 7
    a) 27 litres
    b) 3min

    an 8
    a) $6.50
    b) 25g
    c) 3000g, $19.50

    qn 9
    a) $201600
    b) $4200

    qn 10
    a) 19.3g
    b) No, it is lighter than pure gold so there's some thing missing in that cube..

    ReplyDelete
  2. 1. a)$3.50
    b)72
    c)47
    d)$80
    e)4kg
    f)60g

    2. a)$23
    b)$920

    3. a)9km/l
    b)$1.2

    4. a)87.5g
    b)0.7g

    5. a)$15
    b)$150

    6. a)$22.50
    b)$450

    7. a)27l
    b)3 mins

    8. a)$26
    b)25g
    c)3kg,$78

    9. a)$201600
    b)$4200

    10. a)19.3g
    b)No,if it were pure gold it would be 34.4g heavier as calculated using the answer in 10a.

    ReplyDelete
  3. 1. (a) $3.50
    (b) 72 vases
    (c) 47 words
    (d) $80
    (e) 4kg
    (f) 60g
    2. (a) $23/h
    (b) $920/week
    3. (a) 9km/liter
    (b) $1.20/liter
    4. (a) 87.5g/cube
    (b)0.7g/cm^3 of cube
    5. (a) $15
    (b) $150
    6. (a) $22.5
    (b) $450
    7. (a) 27 liters
    (b) 3 min
    8. (a) $26/kg
    (b) 25g/m^2
    (c) 3kg, $78
    9. (a) $201600
    (b) $4200
    10. (a) 19.3g
    (b) No, becuase if the cube was made from pure gold, it would weigh 154.4g but the cube weighs 120g which is lighter.

    ReplyDelete
  4. Question:
    1a) $3.50
    1b)72 vases
    1c)47 words
    1d)$80
    1e)4kg
    1f)60g

    2a)$23/h
    2b)$920/week

    3a)9km/litre
    3b)$1.20/litre

    4a)87.5g/cube
    4b)0.7g/cm3

    5a)$15/ticket
    5b)$150

    6a)$22.50/m2
    6b)$450

    7a)27 litres
    7b)3minutes

    8a)$26/kg
    8b)25g/m2
    8c)$78 and weighs 3000g

    9a)$201600
    9b)$4200/m2

    10a)19.3g/cm3
    10b)A pure gold cube of sides 2cm should weigh 219.3 x (2x2x2) = 154.4g but it weighs 120g so it is made of pure gold.

    ReplyDelete
  5. 1. a)$3.50
    b)72 vases
    c)47 words
    d)$80
    e)4kg
    f)60g

    2. a)$23
    b)$920

    3. a)9km/litre
    b)$1.20/litre

    4. a)87.5g
    b)0.7g

    5. a)$15
    b)$150

    6. a)$22.50
    b)$450

    7. a)27 litres
    b)3 minutes

    8. a)$26
    b)25g
    c)3kg,$78

    9. a)$201600
    b)$4200

    10. a)19.3g
    b)No, A pure gold cube would weigh 154.4 g which is more than 120g

    ReplyDelete
  6. Q1a)$3.50/L
    b)72 vases/day
    c)47 words/min
    d)$80/m2
    e)4kg/m
    f)69g/eggs

    Q2a)$23/h
    b)$920/week

    Q3a)9km/L
    b)$1.20/L

    Q4a)87.5g/cube
    b)0.7g/cm3

    Q5a)$15/ticket
    b)$150

    Q6a)$22.50/m2
    b)$450

    Q7a)27L/min
    b)3 mins

    Q8a)$26/kg
    b)25g
    ci)3kg
    ii)$78

    Q9a)$201600
    b)$4200/m2

    Q10a)19.3g/cm3
    b)No. If it was pure gold, it would weigh 154.4g, but it weighs 120g, which is lighter, so it is not pure gold.

    ReplyDelete
  7. 1a) $3.50
    1b)72 vases
    1c)47 words
    1d)$80
    1e)4kg
    1f)60g
    2a)$23/h
    2b)$920/week
    3a)9km/litre
    3b)$1.20/litre
    4a)87.5g/cube
    4b)0.7g/cm3
    5a)$15/ticket
    5b)$150
    6a)$22.50/m2
    6b)$450
    7a)27 litres
    7b)3minutes
    8a)$26/kg
    8b)25g/m2
    8c)$78 and weighs 3000g
    9a)$201600
    9b)$4200/m2
    Q10a)19.3g/cm3
    Q10B)No. the cube is 34.4 g lighter than it should be if it was pure gold

    ReplyDelete
  8. 1
    a)$35/l
    b)72vases/day
    c)47words/min
    d)$80/m2
    e)4kg/m
    f)69g/egg

    2a)$23/h
    2b)$920/week

    3a)9km/l
    3b)$1.20/l

    4a)87.5g/cube
    4b)0.7g/cm3

    5a)$15/ticket
    5b)$150

    6a)$22.50/m2
    6b)$450

    7a)27l/min
    7b)3 minutes

    8a)$26/kg
    8b)25g/m2
    8c)3kg of fertilizer and it costs $78

    9a)$201600
    9b)$4200/m2

    10a)19.3g/cm3
    10b)It is not made of pure gold. If it is made of pure gold, it would have weighed 154.4g instead of 120g.

    ReplyDelete
  9. Q1
    a)$3.50/L
    b)72 vases/day
    c)47words/min
    d)$80/m2
    e)4kg/m
    f)60g/egg

    Q2
    a)$23/h
    b)$920/week

    Q3
    a)9km/L
    b)$1.20/L

    Q4
    a)87.5g/cube
    b)0.7g/cm3

    Q5
    a)$15/ticket
    b)$150

    Q6
    a)$22.50/m2
    b)$450

    Q7
    a)27L/min
    b)3.6min

    Q8
    a)$26/kg
    b)25g
    c)3000g, $78

    Q9
    a)$201600
    b)$4200/m2

    Q10
    a)19.3g/cm3
    b)It is not made of pure gold. SInce the rate of the mass of the pure gold is 19.3g/cm3, it should have weighed 154.4g. However its mass is 120g so it is not made of pure gold.

    ReplyDelete
  10. 1a) $3.50/litre
    1b) 72 vases/day
    1c) 47 words/min
    1d) $80 /m^2
    1e) 4 kg/m
    1f) 60g/egg
    2a) $184 ÷ 8h = $23/h
    2b) $184 x 5 = $920/week
    3a)9km/litre
    3b)$1.20/litre
    4a)87.5g/cube
    4b)0.7g/cm^3
    5a)$15/ticket
    5b)$150
    6a)$22.5/m^2
    6b)$450
    7a)27 litres/min
    7b)3minutes
    8a)$26/kg
    8b)25g/m^2
    8c) mass: 3000g cost: $78
    9a)$201600
    9b)$4200/m^2
    10a)19.3g/cm^3
    10b)No, it weigh lighter than pure gold. If it is made of pure gold, it should weigh 154.4g instead of 120g.

    ReplyDelete
  11. 1. a)$3.50
    b)72 vases
    c)47 words
    d)$80
    e)4kg
    f)60g

    2. a)$23
    b)$920

    3. a)9km/litre
    b)$1.20/litre

    4. a)87.5g
    b)0.7g

    5. a)$15
    b)$150

    6. a)$22.50
    b)$450

    7. a)27 litres
    b)3 minutes

    8. a)$26
    b)25g
    c)3kg,$78

    9. a)$201600
    b)$4200

    10. a)19.3g
    b)No, the pure gold cube should weigh 154.4 g which is more than 120g

    ReplyDelete
  12. Question 1
    (a) 3.50
    (b) 72
    (c)47
    (d)80
    (e) 4
    (f) 60

    Question 2
    (a)184 / 8 = 23
    Ans: $23/hour
    (b)184 x 5 = 920
    Ans: $920/week

    Question 3
    (a)225 / 25 = 9
    Ans: 9km/litre
    (b)30 / 25 = 1.2
    Ans: $1.20 per litre

    Question 4
    (a)525 / 6 = 87.5
    Ans: 87.5 g per cube
    (b)5 x 5 = 25
    25 x 6 = 150
    525 / 150 = 3.5
    Ans: 3.5 g per cm^3 of cube

    Question 5
    (a)120 / 8 = 15
    Ans: $15 per ticket
    (b)15 x 10 = 150
    Ans: $150

    Question 6
    (a)270 / 12 = 22.5
    Ans: $22.50 per m^2
    (b)22.50 x 20 = 450
    Ans: $450

    Question 7
    (a)9/20 x 60 = 27
    Ans: 27 L per minute
    (b)60 x 45 x 30 = 81 000
    81000 cm^3 = 81 litres
    81 / 27 = 3
    Ans: 3 mins

    Question 8
    (a)13 x 2 = 26
    Ans: $26 per kg
    (b)500 / 20 = 25
    Ans: 25 g
    (c)15 x 8 = 120
    120 x 25 = 3000
    3000g = 3 kg
    26 x 3 = 78
    Ans: Mass = 3000g
    Cost = $78

    Question 9
    (a)5 units = $504 000
    1 unit = $100 800
    2 units = $201 600
    Ans: $201 600
    (b)504 000 / 120 = 4200
    Ans: $4200 per m^2 of the apartment

    Question 10
    (a)3 x 3 x 3 = 27
    521.1 / 27 = 19.3
    Ans: 19.3 g of pure gold per cm^3
    (b)2 x 2 x 2 = 8
    120 / 8 = 15
    No. If you calculate its mass per cm^3, it is 15 g but the mass per cm^3 for pure gold is 19.3 g. That means it is lighter. So it is not pure gold.

    ReplyDelete
  13. Question
    1(a) $3.5/litre
    (b) 72vases/day
    (c) 47words/minute
    (d) $80/m^3
    (e) 4kg/m^2
    (f) 60g/egg

    Question 2 :
    (a)$23/hour
    (b)$920/hour

    Question 3 :
    (a) 9km/litre
    (b) $1.2/litre

    Question 4 :
    (a) 87.5g/cube
    (b) 0.7g/cm^3 of cube

    Question 5 :
    (a)$15/ticket
    (b)$150

    Question 6 :
    (a) $22.5/m^2
    (b) $450

    Question 7 :
    (a)27litres/minute
    (b)3 minutes

    Question 8 :
    (a)$26/kg
    (b)25g
    (c)3000g $78

    Question 9 :
    (a)$201600
    (b)$4200/M^2

    Questions 10 :
    (a)19.3g/cm^3
    (b)No it is not pure gold. Because if it was Pure Gold the mass per each cm^3 would be 19.3g but for this gold cube the mass per each cm^3 is 15g and so it is not Pure Gold

    ReplyDelete
  14. Q1
    (a) $3.50/litre
    (b) 72vases/day
    (c) 47words/minute
    (d) $80/m^2
    (e) 4kg/m
    (f) 60g/egg

    Q2
    (a)$23/hour
    (b)$920/week

    Q3
    (a) 9km/litre
    (b) $1.20/litre

    Q4
    (a) 87.5g/cube
    (b) 0.7g/cm^3

    Q5
    (a)$15/ticket
    (b)$150

    Q6
    (a) $22.5/m^2
    (b) $450

    Q7
    (a)27litres/minute
    (b)3 minutes

    Q8
    (a)$26/kg
    (b)25g/m^2
    (c)mass=3kg cost=$78

    Q9
    (a)$201600
    (b)$4200/m^2

    Q10
    (a)19.3g/cm^3
    (b)mass-> 15g/cm^3
    The mass per cubic centimetre for that cube is lighter than that of the cube made of pure gold, therefore, it is not pure gold.

    ReplyDelete
  15. Q1
    a)$3.50
    b)72 vases
    c)47 words
    d)$80/m^2
    e)4kg/m
    f)60g/egg
    Q2
    a)$23/h
    b)$920/week
    Q3
    a)9km/litre
    b)$1.2/litre
    Q4
    a)87.5g/cube
    b)125cm^3
    Q5
    a)$15/ticket
    b)$150
    Q6
    a)$22.50/m^2
    b)$450
    Q7
    a)27l/minute
    b)3 minutes
    Q8
    a)$26/kg
    b)25g
    c)Mass: 3000g
    Cost:$78
    Q9
    a)$201600
    b)$4200/ms
    Q10
    a)57.9g
    b)Mass of 2nd cube= 15g/cm^3
    The second cube weighs much lighter than the original cube made of pure gold, so the cube is therefore not made of pure gold.

    ReplyDelete