Question

I. the cost of 6 mathematics book is rupees 450 , find the cost of 17 books (ddirect and inverse proportion)​

Answer 1

Step-by-step explanation:

6 - 450

17- ?

cost of 1 book = 450*17/6

= 1275

Answer 2

$\underline{ \fcolorbox{green}{pink}{ \huge{Solution :)}}}$

Given ,

The cost of 6 mathematics book is 450 ruppes

Thus ,

1 mathematics book = 450/6 i.e 75 ruppes

Hence , the cost of 17 mathematics books is (75 × 17) = 1275 rupees

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