Mean of 28, 30, 26, (K+6) and (K+1) is 25. Find the mean of 32, 39, and 2k.
Answer & explanation
Correct answer: option 3
Mean of 28, 30, 26, (K+6) and (K+1) = 25
(28+30+26+k+6+k+1)/5 = 25
2k+91 = 125
2k = 34
k = 17
mean of 32, 39, and 2k = (32+39+2*17)/3 = 105/3 = 35
The correct answer is Option (3) → 35