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The average weight of 15 girls were recorded as 54 kg. If the weight of teacher was added the average increased by 2 kg. What was the teacher's weight.

A75 kg

B95 kg

C78 kg

D86 kg

Answer:

D. 86 kg

Read Explanation:

Weight of teacher = Z+x (z-y) x=15, y=54, z=56 = 56+15*2 =56+30 = 86 kg


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