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- The average weight of 15 girls in a group is 24 kg when a new girl included the average weight increases by 2.
Question 1:
The average weight of 15 girls in a group is 24 kg when a new girl included the average weight increases by 2. What is the weight of the new girl? A. 28 kg
B. 34 kg
C. 56 kg
Feedback Average weight of 15 girls = 24 kg
Total weight of 15 girls = 24 x 15 = 360 kg
Average after including a new girl = 24 + 2 = 26 kg
Total weight of 16 girls = 26 x 16 = 416 kg
Weight of the new girl = Total weight of 16 girls - Total weight of 15 girls
= 416 - 360 = 56 kg. Hence the required answer is 56 kg.
Total weight of 15 girls = 24 x 15 = 360 kg
Average after including a new girl = 24 + 2 = 26 kg
Total weight of 16 girls = 26 x 16 = 416 kg
Weight of the new girl = Total weight of 16 girls - Total weight of 15 girls
= 416 - 360 = 56 kg. Hence the required answer is 56 kg.
D. None of these
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