Question
The average age of a group of 24 persons is found
to be 20 years. Later it is found that age of two of the persons is calculated as 30 and 20 instead of 80 and 18. Find the correct average age of the group.Solution
Required average = {(24 × 20) – 30 – 20 + 80 + 18}/24 = 22 years
More Average Questions
40% of 50 + 50% of ? = 25% of 300 - 10% of 250
140% of 1270 + 60% of 2085 = 1881 + ‘?’% of 287
48 ÷ 6 × √25 + 13 × 8 = ?
- What will come in the place of question mark (?) in the given expression?
32% of 74% of ? = 16% of 37% of 180 Find the simplified of the following expression:
4.2 × 6.5 × 7.8 = ?
Train M, ‘x’ metres long crosses (x – 30) metres long platform in 22 seconds while train N having the length (x + 30) metres crosses the same plat...
{(5/8) + (4/5)} × (?/19) = 33
What will come in place of (?) question mark in the following expression.
(√1296 ÷ √36) × ? = 120
(200 + 50% of 120) ÷ (9 × 2) = ?
