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 ?

Aptitude and Logical Reasoning Solved Problems:

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 ?

Answer : 56 kg

Solution :

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.