Question
6 years ago ratio of the ages of the two persons A and B
was 5:3. 3 years hence the ratio of their ages will be 4:3. Find the present age of B.Solution
6 years ago, Let A’s age be 5x and B’s age be 3x. According to the question, 3 years hence, => (5x + 9)/(3x + 9) = 4/3 => 15x + 27 = 12x + 27 => x = 3 Present age of B = 3x + 6 = 3 × 3 + 6 = 15 years
More Ratio and proportion Questions
Simplify the following expression and find the final value:
(18 ÷ 6 of 2 + 7 of 5) ÷ 5
1540 ÷ 7 - 184 ÷ 8 = ?
(18 2 – 17 2) x (1/5) + ? = 148
Find the value of 27 ÷ 2 of 16 of [6 ÷ 8 of (6 ÷ 2 + 5)] + (10 ÷ 2.5 + 1)
- 55% of 220 – 15% of 40 = 20% of ?
- What will come in the place of question mark (?) in the given expression?
121/? = ?/144 (21 × 51 + 81)/(9 × 14 - 30) = ?
√11025 x √5625 - (50)² = (?) + (73)²
(190/38) × (55/5) + (306/18) = ?
30% of 60% of 1800 + 13 × 14 = (? ÷ 75) × 5
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