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Numerical Ability
Averages
The average weight of 29 students of 50 balls is 2 lbs. If the weight of the container be included, the average weight will increase by 0.05 lbs. The weight of the container is :
a. 4.55 lbs.
b. 2.2 lbs.
c. 2.3 lbs.
d. 2.5 lbs.
Read Solution (Total 2)
-
- ATQ.
29×50×2=2900
Let container weight be x.
Than total weight/total balls =(2900+x)/50
We get 58+x/50
It is given av. Weight is increased by 0.05 so
x/50 is increased weight so
x/50=0.05
2.5 Ibs answer - 5 years agoHelpfull: Yes(0) No(0)
- Dont confuse with 29 students. Its extra information which is not required in this question.
50*2 .05 -50*2 =104.55-100 = 4.55lbs - 5 years agoHelpfull: Yes(0) No(1)
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