Discussion of Question with ID = 059 under Areas

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Question

A rectangular wire 22 × 10 is re-aligned into a rectangle 11 × 30. What is the percentage increase in area?

A

50 %.

B

52 %.

C

48 %.

D

54 %.

Soln.
Ans: a

By inspection, the length has been halved, and breadth tripled. The %-age increase is known through shortcut formulas to be 50%. So the increase is 50%.


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