Detailed answer for, 15 books cost Rs.360.what willbe the cost of 21 books? How many books can we buy for Rs.864?
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Hlo
your answer
cost of 15 books = rs. 360
then,
cost of 1 book = 360 / 15
= rs . 24
now.
cost of 21 books = cost of 1 book × 21
24 × 21 = rs. 504
your answer
cost of 15 books = rs. 360
then,
cost of 1 book = 360 / 15
= rs . 24
now.
cost of 21 books = cost of 1 book × 21
24 × 21 = rs. 504
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