the cost of 20 books is rupees 180.find the cost of 15 books
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3
Answer:
cost of 15 books = 135 rupees
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Answered by
3
Answer:
rs 135
Step-by-step explanation:
cost of 20 books = 180(given)
the cost of 1 book is =180/20
= rs 9
therefore,
the cost of 1 book is =9
the cost of 15 book is =15*9
=rs 135
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