Question

If the mean of p,q,r,s and t is 10. Calculate the mean of p+1, q+2, r+3, s+4 and t+5.

Answer 1

Since the mean of p, q, r, s and t is equal to 10, we have:

$\frac{p+q+r+s+t}{5}=10$

Then, calculating the mean of p+1, q+2, r+3, s+4 and t+5, we have:

$\begin{gathered} \frac{p+1+q+2+r+3+s+4+t+5}{5} \\ =\frac{p+q+r+s+t}{5}+\frac{1+2+3+4+5}{5} \\ =10+\frac{15}{5}=10+3=13 \end{gathered}$