Question

Thirty articles are bought at rs 250 each.if one-third of these articles be sold at 7% loss;at what price must each of the remaining articles be sold in order to make a profit of 20% on the whole?

Answer 1

$cp = 30 \times 250 = 7500 \\ sp(required )= 120\%of \: 7500 = 9000 \\ sp \: for \: 10articles = 93\%of2500 = 2325 \\ \\ then \: for \: remaimg \: required \: sp \: is \: 9000 - 2325 = 6675 \\ \\ sp \: for \: remaining \: articles \: \frac{6675}{20 } = 333.75$