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Numbers in General Form

The cost of ...

Question

The cost of $12$ chairs and $15$ tables is $R s . 58, 968$ . What is the cost of $4$ chairs and $5$ tables?

A

R s . 19, 656

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B

R s . 29, 484

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C

R s . 39, 312

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D

R s . 40, 672

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Solution

The correct option is C $R s . 19, 656$
(a) Cost of $4$ chairs and $5$ tables
$= \frac{1}{3} \times c o s t o f (12 c h a i r s a n d 15 t a b l e s)$
$= \frac{1}{3} \times R s . 58, 968 = R s . 19, 656$ .

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