Question
The average of ten numbers is 80. When five more numbers
are included, the average increases by 4. Find the average of the numbers included.Solution
Sum of the 10 numbers = 80 × 10 = 800
New average = 80 + 4 = 84
Sum of 15 numbers = 84 × 15 = 1260
Sum of new 5 numbers = 1260 - 800 = 460
Required average = 460 ÷ 5 = 92
More Average Questions
16     17      25      ?     99    180
...18, 25, 33, 42, 52, 63, ?
7, 26, 238, 962, 8522, 34078
13, 14, 18, 27, 43, ?
21, 37, 62, 98, 147, ?
6 6 3 6.5 12 33
...38    40    83    254    ?     5126
Direction: Which of the following will replace ‘?’ in the given question?
10, 12, ‘?’, 27, 36, 45, 54, 63, 72
19   20   42   129   ?    2605  . Â
To find the Next number in the given series.
0 6 24 60 120 ?
...
