Maths / Comparing Quantities / Discount and Discount Percentage

QUESTION

A man bought mangoes at 12 for a rupee.how many for a rupee must he sell to gain 20%?

 OPTIONS A. 10 for one rupee B. 15 for one rupee C. 5 for one rupee D. none of these
Right Option : A

EXPLANATION
Explain TypeExplanation Content
Text

Cost price of mangoes 12 = Rs 1

Cost price of mangoes 1 = 1/12

Gain = 20%

$\fn_jvn \large Gain = \frac{20}{100} X \frac{1}{12}= \frac{1}{60}$

$\fn_jvn \large S.P. = \frac{1}{12} + \frac{1}{60}= \frac{5+ 1}{60}=\frac{6}{60}=\frac{1}{10}$

He should sell for 10 a rupee.

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