**The figure is made up of three squares A, B and C that overlap each other. The area of square A is 20% that of Square B, where the area of square B is 60% of square C. What is the ratio of the shaded area to the unshaded area?**

(Shaded area)

B – A ----- 6000 – 1200 = 4800

(Unshaded area)

C – shaded area ----- 10 000 – 4800 = 5200

Shaded Area : Unshaded Area

4800 : 5200**12 : 13 (Answer)**

This blog is managed by Song Hock Chye, author of Improve Your Thinking Skills in Maths (P1-P3 series), which is published and distributed by EPH.

## Friday, October 03, 2008

### Catholic High Sch 2006 PSLE Math Prelim Q44

Labels:
Mathematics,
Percentage,
Ratio

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