If a man was r years old s years ago, how many years old will he be t years from now?
A
s+r+t
B
rs+t
C
s-r+t
D
r-s+t
Correct Answer: s+r+t
a man was r years old s years ago,so his present age is = r + s after t years his age will be = r + s + t ans: r + s + t