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18 years ago, The sum of age of a family of four members = 45 × 4 = 180 years Now at present, The sum of present age of four members = 180 + 18 × 4 =252 years Let the Present age of younger child be x years And the present age of older child = (x + 12) years Now, as per the question 252 + x + 12 + x = 45 × 6 2x = 270 – 264 2x = 6 x = 3 Hence the required ratio = (3+12) : 3 = 15: 3 = 5: 1
If 2, 7, 20, x , 110, 235,
Then, 7 x + 7√x = ?
12 10 13 18.5 25.50 ...
112 ? 336 840 2520 8820
...30 27 20 9 ? - 25
56. 23 45 89 177 363 705
...Direction: Which of the following will replace ‘?’ in the given question?
342, ‘?’, 420, 462, 506, 552, 60
4 6 12 ? 44 74
...3 5 7 25 8...
24 47 137 ? 2679 16049
...9 16 56 318 2424 25070
...