In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to b

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In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is:

Options:

A . 20 litres

B . 30 litres

C . 40 litres

D . 60 litres

Answer: Option D

Quantity of milk =

60 x
2
litres = 40 litres.
3

Quantity of water in it = (60- 40) litres = 20 litres.

New ratio = 1 : 2

Let quantity of water to be added further be x litres.

Then, milk : water =

40

.
20 + x

Now,

40

=
1
20 + x
2

20 + x = 80

x = 60.

Quantity of water to be added = 60 litres.

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