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The average weight of 15 girls was recor...

The average weight of 15 girls was recorded as 54 kg. If the weight of the teacher was added, the average increased by two kg. What was the teacher's weight.

A

75 kg

B

95 kg

C

78 kg

D

86 kg

Text Solution

Verified by Experts

The correct Answer is:
D

Total weight of 15 girls `=15xx54=810` kg
Total weight of (15 girls + 1 teacher)`=(15+1)xx(54+2)`
`=896 kg`
Weight of teacher =896-810=86 kg.
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