Question

a milkman purchased 30% of milk at the rate of Rs. 12 per litre
40% at the rate of Rs. 13 per litre and the remaining at the rate of Rs 14
per litre. In all, the milkman purchased 500 litres of milk. What!
be the profit per cent. if he sells the milk at the rate of Rs. 14 per
litre​

Answer 1

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30% of 500 = 30/100 × 500 = 150 @ 12/l. = 1800 rs

40% of 500 = 40/100 × 500 = 200@ 13/l = 2600 rs

remaining 30% of 500 = = 150 @ 14/l = 2100 rs

total = 500 litre = 6500 Rs

He sell it @ 14/l = 14×500 = 7000

he gain 500 Rs.

percent = 500/6500 × 100 = 7.69%