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.

Thursday, April 02, 2009

Rosyth Sch 2006 PSLE Math Prelim Q28

A shopkeeper bought 52 eggs. She threw away 7 rotten eggs and sold the rest at $0.80 for 5 eggs. How much money did she collect in all after selling the eggs?

Solution


52 – 7 = 45 (eggs sold)
45 eggs divided by 5 eggs ----- 9 sets of 5 eggs
1 set ----- $0.80
9 sets ----- 9 x $0.80 = $7.20

Answer: She collected $7.20.

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