Question
16 years ago from now, ratio of ages of ‘R’ and
‘L’ was 3:5, respectively. If ‘L’ is 9 years elder to ‘R’, then what will be the age of ‘L’, 5 years hence from now?Solution
16 years ago from now, let ages of ‘R’ and ‘L’ be ‘3x’ years and ‘5x’ years, respectively. So, 5x – 3x = 16 Or, 2x = 16 Or, x = 8 Present age of ‘L’ = 5x + 9 = 5 × 8 + 9 = 49 years Age of ‘L’, five years hence from now = 49 + 5 = 54 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
