Question

in 729 ml solution the ratio of milk and water is 7:2 how much quantity of water should be added ,so that ratio become 7:3?

Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

729 ml of mixture is in the ratio of 7:2 milk:water. Then:

729/ 7+2=729/9=81

7x 81=567ml milk

2 x 81=162 ml water.

Let n be the amount of water to be added. Then:

567=7/10(729+n)

=510.3+.7n

56.7=.7n

n=56.7/.7

=81 ml of water to be added..