Question

a number of first increased by 20% and then decreased by 15% find the net increase or decrease.does it make any difference if it is 15% decreased first and then 20% increased

Answer 1

Answer:

No difference, it come's same.

Step-by-step explanation:

Assume a number (initially) as 100.

Then; 100 is increased by 20%, then result will be 120, then it is decreased by 15% then result will be 120*{(100-15)/100} = 102.

Change = Final - Initial = 102 - 100 = 2

In second case; Initial number is 15% decreased first and then 20% increased. 100 is decreased by 15%, then result will be 85, then it is increased by 20% then result will be 85*{(100+20)/100} = 102.

Answer 2

Answer:

No difference, it come's same.

Step-by-step explanation:

Assume a number (initially) as 100.

Then; 100 is increased by 20%, then result will be 120, then it is decreased by 15% then result will be 120*{(100-15)/100} = 102.

Change = Final - Initial = 102 - 100 = 2

In second case; Initial number is 15% decreased first and then 20% increased. 100 is decreased by 15%, then result will be 85, then it is increased by 20% then result will be 85*{(100+20)/100} = 102.