Answer:
13
Step-by-step explanation:
The mean of a set of quantities is their sum divided by the number of them.
Mean
((p+1) +(q+2) +(r+3) +(s+4) +(t+5))/5
= (p +q +r +s +t)/5 +(1 +2 +3 +4 +5)/5
= mean(p, q, r, s, t) +15/5
= 10 +3 = 13
The mean of p+1,q+2, r+3,s+4 and t+5 is 13.
