Question

Example 21)
The length of a rectangle is increased by 10%.
What will be the percentage decrease in its breadth so
as to have the same area?

Answer 1

Answer:

Given,

The length is increased by 10 percentage

The breadth is decreased by 10 percentage

L is 10 percent (increased)

B is 10 percent (decreased)

Increased or decreased of the area

=L+b+lb/100

=10+(-10)+10×(-10)/100

=-100/100

=-1

So there is a decrease

So,1 percent decreased