## Wednesday, October 5, 2011

### Percentages:Review

Part 1:
Please review the topic on Percentages from ACE Learning focusing on the following areas:

 Percentage

Part 2:
Complete the following questions:

Question 10

#### 17 comments:

1. (a) \$1568
(b) 25%
(c) (x/100)(2000)
(d) (2/3)(1500-6x) - (x/100)(2000) = ((200-3x)/300)(-500-6x)

2. (a) \$1568
(b) 27.6%
(c) 20x [(0.25x8000)/100 x (x) = 20x]
(d) (100/1000-4x) x (16x-1000) = (1/10 - 4x)(16x - 1000)
= 8/5x -100 -64x^2 -4000

3. a) \$1568
b) 25%
c) \$2000-20x
d) 12.25%-0.05x%

4. a) \$1568
b) 25%
c) \$[(8000x0.25)/100 x 100-x]
d) 16x - 1000

5. [Answer Key]

(a) \$1568 (b) 25% (c) \$[20(100 – x)] (d) \$(8x – 100)

6. (a)\$1568
(b) 25%
(c) \$[20(100-X)]
(d)16x-1000

7. (a)\$1568
(b)25%
(c)[(0.25x8000)]x(100-x)
(d) 16x - 1000

8. This comment has been removed by the author.

9. a) \$1568
b) 25%
c) \$[20(100-x)]
d) 1000-12x

10. a) \$1588
b) 25%
c) \$2000 x (100-x)%
d) 16X-1000

11. a)1568
b)25%
c)8000X\$0.25=2000
2000/100Xx=20x
ans :\$(2000-20x)
d)\$2/3(1500-6x)=\$1000-4x
\$(1000-4x)-\$(2000-20x)
\$16x-1000

12. (a) \$1568
(b) 25%
(c) 8000X0.25=2000
2000(100-x/100)
=2000(100-x)/100
=100[20(100-x)]/100(1)
=20(100-x)
=2000-20x
ANS: \$(2000-20x)
(d) 2/3(1500-6x) - (2000-20x)
= 1000-4x-2000+20x
= 16x-1000
ANS: \$(16x-1000)

13. This comment has been removed by the author.

14. a) 1568
b) 25%
c) \$(100-x)/100 x 2000 = \$(20(100-x))
d) 2/3(1500-6x) - (2000-20x) =(1000-4x-2000+20x) =(16x-1000)

15. a) 8000 X \$0.20 X (100% - 2%)=\$1568
b) 25 - 20 = 5
5/20 ÷ 100% = 25%
c) 8000 X \$0.25 =\$2000
\$2000/100 = \$20
\$20 X x = \$20x
\$(2000-20x)
d) \$2/3(1500-6x) - \$(2000 – 20x) = \$(1000-4x)-\$(2000 - 20x) = \$(-1000+16x) = \$(16x-1000)

16. (a) ANS: \$1568

(b) ANS: 25%

(c) 8000 x \$0.25 = \$2000
(100-x)/100 x \$2000 = \$[20(100-x)]
ANS: \$(2000-20x)

(d) (1000-4x) - (2000-20x) = 16x-1000
ANS: 16x-1000

17. a) \$1568
b) 25%
c) 20(100-x)
d) (2000-20x)-(1000-4x)
16x-1000