Question
Two years ago, the sum of the ages of 'Sonia' and 'Ayesha'
was 50 years. If the ratio of their present ages is 9:16, respectively, then find the age of 'Ayesha' three years from now.Solution
ATQ,
Sum of present ages of 'Sonia' and 'Ayesha' = 50 + 2 + 2 = 54 years
Present age of 'Ayesha' = (16/25) × 54 = 34.56 ≈ 35 years (rounded)
Therefore, the age of 'Ayesha' three years from now = 35 + 3 = 38 years
95 186 376 748 1500 ?
...19   20   42   129   ?    2605  . Â
21Â Â Â Â Â Â Â Â Â Â 48Â Â Â Â Â Â Â Â Â Â 173Â Â Â Â Â Â Â Â 516Â Â Â Â Â Â Â Â 1245Â Â Â Â Â Â 2576Â Â Â Â Â Â ?
...4 5 12 39 160 ?
...5, 11, 19, 29, 41, ?
50 62 ? 96 126 138
...20 9 10 ? 29 71.5
...12, 16, 25, 41, 66, ?
19, 37, 65, 91, 127, 169
15 25 40 65 ? 195