Question
Present ages of 'A' and 'B' are in the ratio 11:7,
respectively. Present age of 'C' is 120% more than 'B'. If the difference between present ages of 'C' and 'A' is 22 years, then find the present age of 'B'.Solution
Let the present age of 'A' be '11x' years So, present age of 'B' = 11x × (7/11) = '7x' years So, present age of 'C' = 7x × 2.2 = '15.4x' years ATQ; 15.4x - 11x = 22 Or, 4.4x = 22 So, x = 5 So, present age of 'B' = 7x = 5 × 7 = 35 years
24    12    ?    24  96    768
What will come in place of the question mark (?) in the following series?
2, 5, 14, 41, 122, 365, ?
48, 24.5, ?, 39.75, 81.5, 206.25, 621.75
5, 18, 39, 68, 105, ?
600 Â Â Â 60Â Â Â 12Â Â Â ? Â Â Â Â 1.44Â Â Â Â 0.72
What will come in place of the question mark (?) in the following series?
72, 108, 172, ?, 416, 612
30          162        344        ?             890        1270
...24 36 72 108 216 ?
7   4   5   9   20    ?    160.5
- What will come in place of the question mark (?) in the following series?
6, 6, 9, ?, 32, 56
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