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Unitary Method

The cost of b...

Question

The cost of buying 40 books is ₹ 9000. Find the cost of 35 such books

True

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False

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₹ 6875

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₹ 6785

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Solution

The correct option is B
False

Cost of 40 books = ₹ 9000

Hence cost of 1 book = ₹ $\frac{9000}{40}$ = ₹ 225

Hence the cost of 35 books = $225 \times 35$

= ₹ 7875

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