Question
Shalini is younger than Rashi by 4 years. If the ratio
of Shalini and Rashi ages is 8:9 respectively, then find the age of Shalini.Solution
If Rashi’s age be x years, then Shalini’s age be(x-4) years. According to question, => (x – 4)/x = 8/9 => 9x – 36 = 8x => x = 36 Therefore Shalini age = 36 – 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