Question
A mixture contains 60 litres milk and rest is water.
When 30 litres milk and 18 litres water is added to the mixture, the ratio of milk to water becomes 5 : 3. Find the initial quantity of mixture.Solution
Let initial quantity of water be ‘n’ litres. So, (60 + 30) : (n + 18) = 5 : 3 Or, 90 : (n + 18) = 5 : 3 Or, n + 18 = 54 Or, n = 36 Therefore, required quantity of mixture = 60 + 36 = 96 litres
Simplify the following expressions and choose the correct option.
18 * 15 - {3/5 of 250 + 72}
Simplify the given expression.

If 1560 ÷ 30 + 2025 ÷ 45 - z + 33 × 7 = 1848 ÷ 24 × 234 ÷ 39, then the value of z is:
2350 – 4830 + 9570 + 3350 – 1720 = ?
What should come in place of (?) question mark in the given expression.
[60% of 350 + (2/7 of 210)] ÷ 5 = ?
15% of 1800 + 22 = ?Â
- Calculate the value of this expression:
(180 - 90 ÷ 6 of 2) ÷ 5 + 3 of 16 ÷ 4 - 12 of 4 ÷ 8 (7/5) × (3/4) × (5/9) × (6/7) × 3112 = ?
Determine the value of 'p' in following expression:
720 ÷ 9 + 640 ÷ 16 - p = √121 X 5 + 6²- 7