Let present age of ‘B’ be ‘x’ years Present age of ‘A’ = x × 1.50 = ‘1.50x’ years ATQ; (x + 12) + 7 = (1.50x + 12) Or, x + 19 = 1.50x + 12 Or, 7 = 0.50x Or, x = 14 So, present age of ‘B’ = 14 years And, present age of ‘A’ = 14 + 7 = 21 years Required sum = 14 + 21 = 35 years
153, 154, 310, 913, 3736, 18685
5, 11, 23, 47, 89, 154
72, 80, 89, 153, 180, 394
30, 42, 48, 54, 65, 81, 126
Find the wrong number in given number series.
1116, 1135, 1158, 1187, 1224, 1278.
76, 93, 112, 136, 156, 181
13, 16, 24, 39, 64, 98
164, 20, 216, -40, 284, -112
3 6 18 149 602 15057
...75, 450, 225, 1330, 675, 4050