Question
The age of a father is 4 times that of his son. After 6
years, the father will be 3 times as old as his son. Find the present age of the son.Solution
Let the present age of the son be x years. Then the father’s age is 4x years. After 6 years, the father will be 4x + 6, and the son will be x + 6. Given: 4x + 6 = 3(x + 6). 4x + 6 = 3x + 18. x = 12 years.
(√ 121 x 41) + (3√343 x √289 ) = ? x 19  Â

7, 8, 12, 21, 37, ?
Evaluate: 72 ÷ 6 × (5 + 1) − 8² + 10
What will come in the place of question mark (?) in the given expression?
(30 × 5 + 20) × 2 = ?
What will come in the place of question mark (?) in the given expression?
737 + 149 - ?²- 367 = 14 X 25(√ 1444 ÷ 5) × 3.25 = ?
522 + 160% of 80 - 130 = ? X 13Â
54% of 250 = 6 × 21 + √?
300% of (3341 – 471) = ? × (√4225/195)