Question

in a mixture of 63 litres the ratio of milk and water is 5:2 ,how much water must be added to the mixture to make the ratio 3:2

Answer 1

milk --5/7 × 63 = 45
water = 18

45/18 + w = 3/2

w= 12
12 more water should be added to get desired ratio

Answer 2

Answer:

The 12 liter water must be added to the mixture to make the ratio 3:2.

Step-by-step explanation:

It is given that in a mixture of 63 litres the ratio of milk and water is 5:2.

$5+2=7$

The quantity of milk is

$63\times \frac{5}{7}=45$

The quantity of water is

$63\times \frac{2}{7}=18$

Let x liter water must be added to the mixture to make the ratio 3:2.

$\frac{45}{18+x}=\frac{3}{2}$

$90=54+3x$

$90-54=3x$

$36=3x$

$12=x$

Therefore the 12 liter water must be added to the mixture to make the ratio 3:2.