Question
In a training group of 32 members, the average score is
60. One member with a score of 56 leaves, and 4 new members with an average score of 64 join. When the trainer’s score is also included, the average becomes 62. What is the trainer’s score?Solution
Initial total score = 32 × 60 = 1920
Score of 4 new members = 4 × 64 = 256 Let the trainer’s score be ‘y’
New total score without trainer = 1920 - 56 + 256 + y = (2120 + y)
New total number of people = 32 - 1 + 4 + 1 = 36
New total score = 36 × 62 = 2232
So, trainer’s score = 2232 - 2120 = 112
4, 11, 24, 46, 74, 109
1320, 1352, 1390, 1436, 1488, 1548
30, 42, 48, 54, 65, 81, 126
Find the wrong number in given series.
2118, 2140, 2209, 2334, 2550, 2893
Find the wrong number in the given number series.
24, 47, 76, 107, 144, 189
Find the wrong number in the given number series.
65, 91, 130, 182, 286, 429
- Find the wrong number in the given number series.
16, 25, 37, 52, 72, 97 135, 148, 109, 174, 87, 200Â
768Â Â Â 2304Â Â Â 288Â Â Â 864Â Â Â 106Â Â Â 324
- Find the wrong number in the given number series.
5, 25, 30, 90, 92, 86