Wipro Company Numerical Ability Averages

The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded, the average of the remaining numbers is :

a. 36.5
b. 37
c. 37.5
d. 37.52

Read Solution (Total 2)

c) 37.5
sum=50*38=100*38/2=1900
new sum=1900-(45+55)=1800
avg=1800/48=300/8=75/2=37.5
12 years agoHelpfull: Yes(12) No(5)

sum of 50 numbers=50*38=1900
sum of 48 numbers=1900-(45+55)=1800
avg of 48 no=1800/48=37.5
10 years agoHelpfull: Yes(4) No(2)

Wipro Other Question

A class has two sections, in one of which there are 40 students with an average of 14.5 years. The average of the class is 14.2 years. If there be 32 students in the other section, its average age is :

a. 13.5 years
b. 13.6 years
c. 13.7 years
d. None The mean of 100 abservations was calculated was 40. It was found later on that one of the observations was misread as 83 instead of 53. The correct mean is :

a. 39
b. 39.7
c. 40.3
d. 42.7