Question

the length of a rectangle is increased by 75% by what percent the width has to be decreased approximately so as to maintain the same area?

Answer 1

Let length = 100m
Breadth = 100 m
175 ( 100 – b) = 100 * 100
17500- 175b = 100 * 100
175b = 17500- 10000
175b = 7500
b = 42.85 %