Question

a number was increased by 20 and again decreased by 20 %. find the net gain or loss per cent​

Answer 1

Step-by-step explanation:

GIVEN :

a number was increased by 20 and again decreased by 20 %. find the net gain or loss per cent

to find :

find the net gain or loss per cent

solution :

• the number to = 100

• Increased Number = 100 +20 = 120

• resulting number decreased by 20%

• Decrease in the number= (20/100)x120))= 12x2=24

• New number= 120-24 = 96

• Now, net decrease =100-96 = 4

• Net % increase = (net decrease/ Original number » 100) %

• =((4/ 100 )×100) %

• = 4%.

• Hence, net percent decrease= 4%