Question

The length of a rectangle is increased by 20%. To keep its area constant, find how much percent its breadth

be decreased

1) 25% 2) 20% 3) 16 3

2 % 4) 19% 5) None of these​

Answer 1

Answer:

16.67%

Step-by-step explanation:

For example:

when the length is 10m and breadth is 6m,

after increasing 20%, the length becomes 12m.

So, 10×6=12×new breadth

new breadth=5

Percent its breadth be decreased

=（6-5）÷6×100%

=16.67%