Question

A number is increased by 30% then

decreased by 30%, then further decreased

by 30%. What is the net increase/decrease

present in the number ​

Answer 1

Answer: 9%

Step-by-step explanation:

LET THE NUMBER BE X

INCREASED NUMBER=13X/10

THEN DECREASE=13X/10 -13X/10*30/100

                              13X/10-39X/100

                         =91X/100

DECREASE=X-91/100X

                     9X/100

DECREASE%=(9X/100 *1/X  *100)%

                     9%

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