Question

7.) If the length of a rectangle is reduced to one-third and its breadth is quadrupled, what is the percentage change in its area?

Answer 1

Answer:

33.33%

Explanation:

At first, let length=x,breadth=y

therefore area=xy

now, length is reduced to one third.

length=x/3

breadth is quadrupled

breadth=4y

new area=4y×x/3

=4xy/3

change in area=4xy/3 - xy

=xy/3

therefore percentage change in area

=(change in area/original area)×100

=(xy/3/xy)×100

=33.33%

hope it's clear...

Answer 2

33.33 percent

Hopefully this helps you.........