A shopkeeper has 4000kg of rice, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity sold at 18% profit is

Options
- 2400 kg
- 400 kg
- 600 kg
- 1200 kg

CORRECT ANSWER : 2400 kg

Discussion Board
solution

4000kg divide in 3 part so let take a x
1. 8%x kg
2. 18(4000-x)% kg
3. whole gain 14%x in kg
so- 8/100*x + 18/100*(4000-x) = 14/100*4000
by solved this equation we get x=1600
and we want 18 profit so
40000-1600= 2400 kg


MEGHA PANDEY 07-26-2020 03:56 PM

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