1.

The price of a book is increased by 20% . if it's increased price ₹145.60 find the original price​

Answer»

ong>Step-by-step explanation:

Let the original PRICE of the BOOK be Rs. 100.

DECREASED price of the book = Rs. 75

Increased price of the book after 20% increase

=

100

120

× Rs. 75= Rs. 90

∴ Net change in price = Rs. 10 DECREASE

∴ % change =

100

10

×100=10% decrease

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