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'A' buys an a...

Question

'A' buys an article and sells it to 'B' at a profit of 10%. 'B' sells it to 'C' gaining 20%. If 'C' gives Rs 924. what amount did 'A' give?

Rs 700

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Rs 724

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Rs 780

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Rs 823

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None of the above

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Solution

The correct option is A Rs 700
We have, m =10, n =20, z =Rs 924.
$∴$ Cost price of A
$= [\frac{100^{2} z}{(100 + m) (100 + n)}] = [\frac{100 \times 100 \times 924}{(100 + 10) (100 + 20)}] = \frac{100 \times 100 \times 924}{110 \times 120} = R s 700$

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'A' buys an article and sells it to 'B' at a profit of 10%. 'B' sells it to 'C' gaining 20%. If 'C' gives Rs 924. what amount did 'A' give?

The correct option is A Rs 700We have, m =10, n =20, z =Rs 924. ∴ Cost price of A =[1002z(100+m)(100+n)]=[100×100×924(100+10)(100+20)]=100×100×924110×120=Rs700

The correct option is A Rs 700
We have, m =10, n =20, z =Rs 924.
$∴$ Cost price of A
$= [\frac{100^{2} z}{(100 + m) (100 + n)}] = [\frac{100 \times 100 \times 924}{(100 + 10) (100 + 20)}] = \frac{100 \times 100 \times 924}{110 \times 120} = R s 700$