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