7 years ago, the ratio of the ages of A and B was 1:2 and after 7 years it will become 3:5. Find their present ages.
7 years ago, Let the ratio of ages of A and B = x:2x According to the question, => (x + 14)/(2x + 14) = 3/5 => 5x + 70 = 6x + 42 => x = 28 Present age of A = x + 7 = 35 years Present age of B = 2x + 7 = 63 years
44.87% of (39.85 × ?) – 1520.88 0.51 = 1400.8
13.96% of (141.17 + 158.85) + 7.95³ - (6.88 of 9.07) = ? of (58.06 - 13.02)
24.99 × 32.05 + ? - 27.01 × 19.97 = 29.99 × 27.98
(7.992/√?) + √16/? = 14.032/?
33.33% of 179.99 = 29.98% of 199.98 - ?
(14.56)² × √840 =?
...(3/5) of 3025 + (18² + 12²) = ? + 22.22% of 1125
6.992 + (2.01 × 2.98) + ? = 175.03
1219.98 ÷ 30.48 × 15.12 = ? × 2.16
