Question
The average of ‘x’ numbers is 25. If 70% of the numbers
are decreased by 3 and the remaining numbers are increased by 9, then find the new average of the ‘x’ numbers.Solution
ATQ,
Sum of ‘x’ numbers = 25x
New sum of the ‘x’ numbers = 25x – 0.7x × 3 + 0.3x × 9 = 25.4x
Therefore, new average = 25.4x/x = 25.4
More Average Questions
- Determine the final value of this expression:
(1/5) of {5⁴ - 24 × 14 + 12 × 18 - 10.5 of 10²} 3% of 842 ÷ 2% of 421 = ?
√225 + 27 × 10 + ? = 320
- Determine the value of ‘p’ if p = √529 + √1444
45 % of 180 + √144 * 8 = ?2 + 70 % of 80
Determine the value of 'p' in following expression:
720 ÷ 9 + 640 ÷ 16 - p = √121 X 5 + 6²- 7?2 = √20.25 × 10 + √16 + 32
- What will come in place of the question mark (?) in the following questions?
(2⁴ + 6²) ÷ 2 = ? 18(1/3) + 9(2/3) – 10(1/3) = 1(2/3) + ?
