Question

the cost of 17 nitebooks is rs 212.50.find the cost if 13 such notebooks

Answer 1

cost of 17 notebooks=rs 212.50
cost of 1 notebook=rs 212.50/17
=rs12.50

cosr of 13 notebooks=rs 13*12.50
=rs162.50
hence,the cost of 13notebooks is rs 162.50
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Answer 2

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