Question

a number increased by 20% and then decreased by 20% find the net increase or decrease percent​

Answer 1

AnswEr :

• Let the Number be 100.

➟ 100 × (100 + 20)% × (100 - 20)%

➟ 100 × 120% × 80%

➟ 100 × $\large\tt{\frac{120}{100}}$ × $\large\tt{\frac{80}{100}}$

➟ 100 × $\large\tt{\frac{12}{10}}$ × $\large\tt{\frac{8}{10}}$

➟ 1 × 12 × 8

➟ 96%

Answer 2

Answer:

increased by 10%=100+10=110

decreased by 10%=100-10=90

90/100*110=1% decreased