Question
Average 20 numbers is ‘x’. If the average of first
12 numbers is 72.5 while average of last 5 numbers is 86.8 and 13th, 14th and 15th numbers are (3x - 48), (x + 54) and 186 respectively. Find the 14th number.Solution
According to question, => 20x = 72.5 × 12 + 86.8 × 5 + 3x – 48 + x + 54 + 186 => 16x = 1496 => x = 93.5 Therefore, 14th number = 93.5 + 54 = 147.5
More Average Questions
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23.98% of 624.99 = 19.98% of ? + 14.98% of 639.99
Direction: Please solve the following expression and choose the closest option
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
12, 16, ?, 36, 52, 72Â
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(6859.01)1/3  × 10.11 × 14.47 ÷ 20.32 = ? + 45.022
33.33% of 809.891 + 66.66% of 212.91 = ?
