The sale of a particular item has decreased by 20%.By what percent price of the item should be increased so that there is no change in revenue collection a) 15% b) 20% c) ( 45 / 2 ) % d) 25%
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d. 25%
before
let price of item 100
sale 10items
after
sale =10-20%10
=10-2=8
price=x
before revenue=after revenue
109*10=8*x
x=1000/8=125
increase %=25/100*100%=25%
d. 25%
before
let price of item 100
sale 10items
after
sale =10-20%10
=10-2=8
price=x
before revenue=after revenue
109*10=8*x
x=1000/8=125
increase %=25/100*100%=25%
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