Thursday, September 9, 2010

Ratio P6 2010 SA2 Pei Chun P2 Q12

Aimei, Bala and Carl won some money in a lucky draw. The amount of money won by Aimei, Bala and Carl was in the ratio 8: 5: 4. They saved some of the money and spent the rest. Aimei saved $480, Bala saved $540 and Carl saved $120. The amount of money spent by Aimei, Bala and Carl was in the ratio 8 : 3 : 5. (a) Find the ratio of the amount of money saved by Aimei to Bala to Carl. (b) How much money did Aimei win? [4 marks][Answer given: 8:9:2, $1440]

A            B            C
---------------------------
8       :     5       :    4
- 8    :    - 3      :   - 5
---------------------------
$480    $540       $120
---------------------------

480 : 540 : 120 = 8 : 9 : 2

a) It was 8 : 9 : 2.

8 u - 8 p --> $480

9 u - 8 p --> 540 + 120 = $660

1 u --> 660 - 480 = $180

8 u --> 8 x 180 = $1440

b) She won $1440.

No comments:

Post a Comment