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Question 80
The price of a book was first increased by 25% and then reduced by 20%. What is the change in its original price?
Solution
let the price of the book be Rs100
Increase 25% =Â Â $$\frac{125}{100}100$$
= 125Rs
decrease 20% = $$\frac{80}{100}125$$
=100Rs
Net change in the price
= $$\frac{100-100}{100\times 100}$$
= no change
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