If the length and breadth of a rectangular plot are increased by 25 percent and 40 percent respectively, then the new area of the plot is how many times the original area?

A7/5

B7/4 ✓ Correct

C5/9

D9/5

Correct answer: (B) 7/4

Explanation

The new area is 7/4 of the original.

New length factor = 1 + 25/100 = 5/4.

New breadth factor = 1 + 40/100 = 7/5.

Area factor = 5/4 x 7/5 = 7/4.

So the new area is 7/4 times the original.

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