The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?

A. 15

B. $15 \frac{1}{5}$

C. 14

D. $14 \frac{1}{5}$

Show Answer

Answer-B
Solution-

Solution(By Apex Team)


Average of 12 numbers = 15 Total of 12 numbers = 15 × 12 = 180 Average of first two number = 14 Total of first two number = 14 × 2 = 28 Total of remaining ten numbers = 180 – 28 = 152 Required average of remaining ten number $\begin{array}{l} =\Large\frac{152}{10} \\ =\Large\frac{76}{5} \\ =15 \Large\frac{1}{5} \end{array}$

संबंधित लेखलेखक से और अधिक