Question
The ratio of ages of A and B, 2 years ago was 5:2. The
sum of present ages of A, B and C is 64 years. If present age of C is equal to sum of present ages of A and B. Find the present age of C.Solution
Let present age of A = (5x + 2) yrs And present age of B = (2x + 2) yrs C’s present age = (5x + 2) + (2x + 2) = (7x + 4) yrs According to question, => (5x + 2) + (2x + 2) + (7x + 4) = 64 => 14x + 8 = 64 => 14x = 56 => x = 4 Therefore the present age of C = (7x + 4) = 32 years
50 62 ? 96 126 138
...89Â Â Â Â Â 78Â Â Â Â Â 74Â Â Â Â Â 67Â Â Â Â Â 63Â Â Â Â ?
4 6 ? 31 119 601
...Find the maximum number of trees which can be planted, 25 meters apart, on the two sides of a straight road 2125 meters long
55 46 60 41 65 36 ?
8 6 2 ? -1 9.5
...9999 6666 ? 2962.66 1975.11 1316. 74
...2, 17, 147, 1167, 8157, 48957
3,   2,   3,  8,  31,  ?
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
4 7 6
15 ? 21
44 68 60
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