There were 9 chairs in each row. 8 rows of chairs were rearranged equally spaced, to form the perimeter of a square. There were same number of chairs on each side of the square. How many chairs were there on each side of the square?

Solution

Total number of chairs ---- 8 x 9 = 72

No. of chairs less 4 corners ---- 72 - 4 = 48

No. of chairs per row less 4 corners ---- 68 divided by 4 = 17

No. of chairs on 1 side ---- 17 + (2 corner chairs) = 19

Answer: 19 chairs per side.

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.

## Wednesday, August 26, 2009

### Singapore Chinese Girls Sch 2008 PSLE Math Prelim Q43

Labels:
Mathematics,
Whole Numbers

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