Question
Sum of the present ages of A, B, C and D is 60 years.
After 2 years ratio of their ages is 7:5:3:2. What is C’s present age?Solution
At present sum of age = 60 years After 2 years sum of age will be, => 7x + 5x + 3x + 2x = 60 + 2 × 4 => 17x = 60 + 8 => x = 4 C’s present age = 3x – 2 = 10 years
41.66% of 888 + 66.66% of 1176 = ?2 - 4√ 16 Â
Evaluate: 320 − {18 + 4 × (21 − 9)}
Simplify: 72 ÷ 6 × 3 − 8 + 4
118 × 6 + 13 + 83 = ?
Simplify the following expression:
  (400 +175) ² - (400 – 175) ² / (400 × 175)
150% of 850 ÷ 25 – 25 = ?% of (39312 ÷ 1512)
(75 + 0.25 × 10) × 4 = ?2 - 14
26% of 650 + 15% of 660 – 26% of 450 = ?
115% of 40 + 3 × 4 = ? × 11 – 8