Question

Increase 150 by 10 % and decrease the same amount 150 by 15 %. Find the

new number in each case.​

Answer 1

since, 10% of 150

= 10/100×150

=15

therefore, 150+10% of 150

= 150+15

= 165

new no. 165

since, 15% of 150

=15/100×150

=22.5

therefore, 150+15% of 150

= 150+22.5

= 172.5

new no. 172.5