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Question:
If the length of each of the sides of three square garden's plots is increased by 50 percent, by what percent is the sum the areas of the three plots increased?
a)
125%
b)
150%
c)
200%
d)
375%
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Description:

Let, the length of each side of the garden = 100

Area = 1002 = 10000

Area of 3 square = 3×10000 = 30000

50% increase of length = 100+100×50/100 = 150

Area = 1502 = 22500

Area of 3 square = 3×22500 = 67500

Increasing area = 67500-30000 =37500

Percentage = (37500×100)/30000=125%

This question was added in the model test of 7 Combined bank: General officer preliminary model test

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Syllabus: Topic based
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