Question
A is younger than B by 4 years. If the ratio of A and B
ages is 5:7 respectively, then find the age of A.Solution
If B’s age be x years, then A’s age be (x - 4) years. According to question, => (x – 4)/x = 5/7 => 7x – 28 = 5x => x = 14 Therefore A's age = 14 – 4 = 10 years
If the first term of the arithmetic progression is 18, the common difference is 5, and the number of terms in the series are 40, then find the sum of th...
73920, 9240, ?, 220, 44, 11
If 2, 7, 20, x , 110, 235,
Then, 7 x + 7√x = ?
53 ? 55 49 57 47
...45 47 97 296 ? 5966
8 9 22 75 316 ?
...If 4 x 4 7 15 38.5
Then, ( x + 1) ( x - 1) = ?
...D irection: Which of the following will replace ‘?’ in the following series
460, 462, ‘?’, 467.5, 470.97
...If 152, 242, x , 332, 404, 314,
then find the value of (2x – 1)?
...24, 33, 50, ?, 108, 149
