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Given :-
The price of a book is increased by 12%
Increased price = 145.60
To Find :-
Original price
Solution :-
Increased price = x + 12% of x
Here, x is the original price.
145.6 = x + 12% of x
145.6 = x + 12/100 × x
145.6 = x + 12x/100
145.6 = 100x + 12x/100
145.6 = 112x/100
145.6 × 100/112 = x
14560/112 = x
130 = x
Hence, the original price is Rs. 130
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Answer:
20 natural numbers between 10 to 30 ok
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