Question 624367
Please help me solve this question and please give me the working out
If Tom was ten years younger he would be exactly one-fourth the age of Mark. If Tom was ten years older he would be exactly one-half the present age of Mark. How old is Tom?
**
let t=tom's age
let m=mark's age
..
t-10=m/4
t+10=m/2
subtract
-20=m/4-m/2
-20=-m/4
m=80
t-10=m/4=80/4=20
t=30
Tom's age=30