The length of a rectangular field is increased by 60 % . By what percent would the width have to be decreased to maintain the same area?
Options:
A . 60%
B . 371/2%
C . 75%
D . 120%
Answer: Option B
Let length = L and breadth = BLet , New breadth = ZThen, New length = ( 160 / 100) L.= 8L / 5? 8L / 5 x Z = LBor Z = 5B/8Decrease in breadth = (B-5B/8)= 3B/8? Decrease in percent = (3B/8 x1/B ) x 100 %= 371/2%
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