Question
In a company, there are 15 employees. The average age of
all the employees is 32 years.If the age of two directors and 1 supervisor is included, then the average age is increased by 2 years. Find the average age of two directors and one supervisor.Solution
ATQ, Average age of 15 employees = 32 years Sum of the ages of 15 employees = 32 × 15 = 480 After including the age of 2 directors and 1 supervisor, new average age = 34 years Sum of the ages of 15 employees including directors and supervisor = 34 × 18 = 612 Sum of the ages of 2 directors and 1 supervisor = 612 – 480 = 132 Average age of 2 directors and 1 supervisor = 132/3 = 44 years
What will come in place of the question mark (?) in the following series?
75, ?, 107, 148, 229, 390
- What will come in place of the question mark (?) in the following series?
2, 5, 16, 47, 138, ? 12, 25, 51, ?, 207, 415
18 19 34 111 428 2165 ?
...1221, 1100, 1000, 919, ?
...What will come in place of the question mark (?) in the following number series?
124, 131, 117, ?, 110, 145
2 3 5 9 ? 33
...(248 + 352)/(34 - 30) = ?
32, 48, 72, 108, 162, ?
What will come in place of the question mark (?) in the following series?
60, 94, 184, 464, 1388, ?
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