Question
Given a set of 25 numbers, the overall average is 60.
The first 11 numbers in this set have an average of 48, while the last 15 numbers have an average of 67. What is the value of the 11th number in the sequence?Solution
Sum of all 25 numbers = 25 x 60 = 1500 Let the 11th number be 'x' So, 1500 + x = (11 X 48) + (15 X 67) Or, 1500 + x = 528 + 1005 Or, 1500 + x = 1533 So, x = 33 Hence, option b.
Raju invests Rs. (p + 200) at a simple interest rate of 25% per annum for a period of 6 years and earns a total interest of Rs. (...
What approximate value should come in the place of question mark in the following questions?
1 ÷ 6.43 of 191.90 + 75.03% of 220 = ?² - 202.9
Find the approximate value of Question mark(?) for given equation.Â
(71.92% of 149.99) ÷ 12.04 + 107.98 = ?
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.)...
1784.04 - 483.98 + 464.98 ÷ 15.06 = ?3
- 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 replace the question mark (?) in the following?
34.99...
6106.11 ÷ √? × 55.9 = 3976.21 Â
- 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.)
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