Question

The mean of a,b,c,d and e is 28. If the mean of a,c, and e is 24, what is the mean of b and d?

• A. 31
• B. 32
• C. 33
• D. 34

Answer 1

The correct option is D

34

Mean of a,b,c,d and e = 28

$\therefore$ Total of a,b,c,d and e =28 $\times$ 5 = 140

Mean of a,c and e = 24

Total of a,c and e = 24 $\times$ 3= 72

$\therefore$ Total of b and d = 140 - 72 = 68

$\therefore Mean=\frac{68}{2}=34$