Question
Three years ago, 'B' was twice as old as 'A'. In three
more years, 'B' will be 60% older than 'A'. What is 'A's current age?Solution
Let the age of 'A', three years ago from now be '2x' years. So, age of 'B', 3 years ago from now = 2x X 2 = '4x' years ATQ; (2x + 6) X 1.6 = 4x + 6 Or, 3.2x + 9.6 = 4x + 6 Or, 3.6 = 0.8x So, x = 4.5 So, present age of 'A' = 2 X 4.5 + 3 = 12 years
What will come in place of the question mark (?) in the following series?
1528, 1416, 1204, ?, 480, -32
143 Â Â Â Â 119Â Â Â Â 107Â Â Â Â 101Â Â Â Â Â 98Â Â Â Â ?
96 89 ? 90 94 91
...What value should come in the place of (?) in the following number series?
19, 235, 260, 324, 333, ?
What will come in place of the question mark (?) in the following series?
305...
In each of the following number series, one term is missing. Find the missing term.
3, 5, 20, 24, 144, 150, ?
1029, 1030, 1039, 1064, ?, 1194
75, 80, 95, ?, 155, 200
What will come in place of the question mark (?) in the following series?
1515, 184, ?, 455, 967, 624
7 29 61 ? 211 349
...
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