Wipro Company Numerical Ability Averages

The average of marks obtained by 120 candidates in a certain examination is 35. If the average of passed candidates is 39 and that of the failed candidates is 15. The number of candidates who passed the examination is:
A. 150
B. 110
C. 100
D. 120
E. None of these

Read Solution (Total 3)

total no.of candidates=120 and avg is 35
then total marks obtained by total candidates will be=120*35(hint:total/num=average)
let us consider passed candidates will be x
failed candidates will be120-x
so

120*35=x*39+(120-x)15

By solving the equation we will get x=100

So ans:100
9 years agoHelpfull: Yes(5) No(1)

C)100
1 PART PASSED OUT OF 6 PARTS OF 6 PARTS
SO 100
9 years agoHelpfull: Yes(1) No(3)
option:C
the total marks obtained by 120 candidates=4200
let the total marks by passed candidates=x
4200=39x+15(120-x)
4200=39x+1800-15x
4200=24x+1800
x=100
8 years agoHelpfull: Yes(1) No(0)

Wipro Other Question

The average of 6 observations is 12. A new seventh observation is included and the new average is decreased by 1. The seventh observation is:
A. 1
B. 3
C. 6
D. 5
E. None of these The average age of a group of 10 students is 14 years. If 5 more students join the group, the average age rises by 1 year. The average age of the new students is:
A. 15 years
B. 17 years
C. 16 years
D. 18 years
E. None of these