Thirty articles are bought at Rs.450 each. If one-third of these articles be sold at 6% loss; at what price must each of the remaining articles be sold in order to make a profit of 10% on the whole ?

Q. Ravish bought 100 articles for Rs.4000. He sold 20 of them at a gain of 5%. At what gain per cent must sell the remaining articles so as to gain 20% on the whole?

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If 6 articles are sold for Re.1, then there is a loss of 20%. In order to gain 20%, what must be the number of articles sold for Re.1?

The correct option is B 4 S.P of 6 articles = Rs.1, Loss = 20 %∴ C.P of 6 articles =1×100(100−20)=10080=54=1.25If the gain is 20% then S.P. of 6 articles =1.25×120100=Rs.1.50∴ For Rs.1, 4 articles are sold

The correct option is B 4
S.P of 6 articles = Rs.1, Loss = 20 %
$∴$ C.P of 6 articles $= \frac{1 \times 100}{(100 - 20)} = \frac{100}{80} = \frac{5}{4} = 1.25$
If the gain is 20% then S.P. of 6 articles $= \frac{1.25 \times 120}{100} = R s .1 .50$
$∴$ For Rs.1, 4 articles are sold