The cost of 5 books is Rs. 90 .What is the cost of 15 such books?
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Answer:
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Step-by-step explanation:
Rs . 270
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Step-by-step explanation:
GIVEN:-
The cost of 5 books = Rs. 90
TO FIND:-
The cost of 15 books = ?
NEEDED ANSWER:-
The cost of 5 books = Rs. 90
The cost of 1 book = 90/5 = Rs. 18
The cost of 15 books = 15×18 = Rs. 270
HENCE:-
The cost of 15 such books = Rs. 270
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