Question
In a classroom there are 15 boys and 12 girls. Average
age of each boy and each girl is 21 years and 17 years respectively. The sum of ages of all the boys, girls and a teacher whose age is ‘x’ years is 560 years. Find the value of ‘x’.Solution
Sum of ages of all boys = 15 x 21 = 315 Sum of ages of all girls = 12 x 17 = 204 So, 315 + 204 + x = 560 => x = 41
More Age Questions
What will come in place of the question mark (?) in the following series?
168, 120, ?, 48, 24, 8
120, 126, 138, 162, ?, 306
In each of the following number series, one term is missing. Find the missing term.
121, 100, 81, ?, 49, 36
84, 105, ?, 168, 210, 259
480, 288, ?, 103.68, 62.208, 37.3248
42, 48, 60, 84, 132, ?
- 8, 12, 18, 27, ?
What will come in place of the question mark (?) in the following number series?
21, 42, 67, 96, ?, 166
11          20          ?             64          112        192
...14, 17, 23, 32, ?, 59
