Question
In an office, there are 18 employees. The average age of
all the employees is 28 years. If the age of three senior managers is included, then the average age is increased by 2 years. Find the average age of three senior managers.Solution
ATQ, Average age of 18 employees = 28 years Sum of the ages of 18 employees = 28 × 18 = 504 After including the age of 3 senior managers, new average age = 30 years Sum of the ages of 18 employees including senior managers = 30 × 21 = 630 Sum of the ages of 3 senior managers = 630 – 504 = 126 Average age of 3 senior managers = 126/3 = 42 years
What value should come in place of (?) question mark in the given expression.
17 × 15 − 96 ÷ 8 + 6² = ?
Evaluate: 144 ÷ 12 × 6 + 35 − 4²
What will come in the place of question mark (?) in the given expression?
21 × 18 + ? – 19 × 15 = 25 × 24
2916 ÷ 54 = ? + 27
√324 + √484 + 63 = ?2
What will come in the place of question mark (?) in the given expression?
{(2/15) + (12/25)} of 375 + 190 = ?% of 375
- What will come in place of the question mark (?) in the following questions?
100−[20+4×5]=? (72 × 52 + 1555 )/(79+60) = 2000 ÷ ?
72 × 2 = ? + 104 – 14
672 ÷ 28 × 24 + 363 – 309 =?
