Question

if a number is increased by 20%,decreased by 15%,and increased by 7 %,what is overall percent change?

Answer 1

let the no. be 100
increase of 2 0 %= 100+ 20 % of 100
= 120
again decrease of 15%= 120 - 15% of 120=
112
again increase of 7 percent = 112+ 7 % of 112

112+ 196/25

percent change = final value(112 +196/25) - 100( initial value)