Question

a number is increased by 10% and then is decreased by 10%.find net increase or decrease percent

Answer 1

net increase is 10℅
net decrease 11℅

Answer 2

let the number =100---(1)
1) if it is increased 10% the new number = 100+10=110---(2)
2) 110 decreased by 10% = 110-11=99---(3)

difference = (1)-(3)
=100-99=1

decreased % = difference/(1)*100
=(1*100)/100
=100/100
=1%