Ben Looi's answer to Clarine Peh's Primary 5 Maths Percentage question.

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Ben Looi
Ben Looi's answer
18 answers (Tutor Details)
1st
Area of triangle with base length the same as the length of rectangle is HALF the area of rectangle.
So, X + Y is 50% of area of rectangle. Therefore, Area of X is 50% - 15%.