Question

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STD:-VIII
Chp-Variation
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The cost of 5 metres of a particular quality of cloth is Rs 210. Tabulate the cost of 2, 4, 10 and 13 metres of cloth of the same type.​

Answer 1

Answer:

Since cost of 5 metres of cloth is 210

therefore the cost of 1 metre of cloth is ₹42

then

the cost of 2 metres of cloth is 2x42=84

the cost of 4 metres of cloth is 4x42=168

the cost of 10 metres of cloth is 10x42=420

the cost of 13 metres of cloth is 13x42=546

Step-by-step explanation:

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Answer 2

★ Given :

Cost of 5m of cloth = Rs. 210

★ To find :

Cost of 2m, 4m, 10m, and 13m of cloth.

★ Formula :

$⟼ \boxed{ \bf \frac{ x_{1} }{ y_{1}} = \frac{ x_{2} }{ y_{2}}}$

★ $olution :

(i) Substituting

$\large \tt \frac{5}{210} = \frac{ 2 }{ y_{2}}$

$\tt \red{Gives \: y_{2} = 84}$

The cost of 2m cloth is Rs. 84

(ii) Substituting

$\large \tt \frac{5}{210} = \frac{ 4 }{ y_{2}}$

$\tt \red{Gives \: y_{2} = 168}$

The cost of 4m cloth is Rs. 84

(iii) Substituting

$\large \tt \frac{5}{210} = \frac{ 10 }{ y_{2}}$

$\tt \red{Gives \: y_{2} = 420}$

The cost of 10m cloth is Rs. 420

(iv) Substituting

$\large \tt \frac{5}{210} = \frac{ 13 }{ y_{2}}$

$\tt \red{Gives \: y_{2} = 546}$

The cost of 13m cloth is Rs. 546