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%

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

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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