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.

Sunday, August 22, 2010

RGS Primary 2009 PSLE Math Prelim Paper 2 Q9

Tricia has some pink, red and yellow ribbons. 1/3 of them are pink ribbons. Four fewer than 1/3 of the remainder are red ribbons and the remaining 24 are yellow ribbons. How many pink ribbons does Tricia have?

Solution




4 units --> 24 - 4 = 20
1 unit --> 20 divided by 4 = 5
3 units --> 3 x 5 = 15

Answer: 15 pink ribbons

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1 comment:

Anonymous said...

the remaining 24 are yellow ribbons.