If the cost of 7 m cloth is F 714- The cost of 21 m of cloth isA- 2142B- - 2412C- - 714D- -4412

The correct option is A nbsp;₹2142 Given the cost of nbsp;7 m cloth = nbsp;₹714 The cost of one metre of cloth would be = nbsp;714/7. ∴ The cost of 21 ...

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Standard VI

Mathematics

Unitary Method

If the cost o...

Question

If the cost of 7 m cloth is ₹714. The cost of 21 m of cloth is _____.

₹2142

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₹2412

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₹714

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₹4412

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Solution

The correct option is A
₹2142

Given the cost of 7 m cloth = ₹714

The cost of one metre of cloth would be = $\frac{714}{7}$ .
$∴$ The cost of 21 m cloth = 21 $\times$ cost of 1 meter cloth

= 21 $\times$ $\frac{714}{7}$

= ₹2142

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If the cost of 7 m cloth is ₹714, then then find the cost of 21 m of cloth.

If the cost of 7 m cloth is Rs 714, then the cost of 21 m of cloth is Rs 2142.

If the cost of 7m cloth is Rs 714, the cost of 21m of cloth is___

If the cost of 7 m of cloth is Rs. 714, then the cost of 21 m of cloth is Rs. 2142.

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If the cost of 7 m cloth is ₹714. The cost of 21 m of cloth is _____.

The correct option is A ₹2142 Given the cost of 7 m cloth = ₹714 The cost of one metre of cloth would be = 7147. ∴ The cost of 21 m cloth = 21 × cost of 1 meter cloth = 21 × 7147 = ₹2142

The correct option is A
₹2142

Given the cost of 7 m cloth = ₹714

The cost of one metre of cloth would be = $\frac{714}{7}$ .
$∴$ The cost of 21 m cloth = 21 $\times$ cost of 1 meter cloth

= 21 $\times$ $\frac{714}{7}$

= ₹2142