Question

In a mixture of 60 litres, milk and water are in the ratio 7: 3. If 3 litres of water be added, find the ratio of milk and water in the new mixture.

• A. 2:3
• B. 3:2
• C. 2:1
• D. 1:2

Answer 1

Answer:

C. 2:1

Total mixture = 60 litres
Initial ratio (milk : water) = 7 : 3

$Milk = ( \frac{7}{10} \times 60 = 42 ) litres$
$Water = ( \frac{3}{10} \times 60 = 18 ) litres$

After adding 3 litres of water:
New water = 18 + 3 = 21 litres
Milk remains = 42 litres

New ratio (milk : water) = 42 : 21 = 2 : 1

Final Answer: 2 : 1