Terry is 25 years older than Ron. in 5 years, he will be twice as old as Ron. Find their present ages.

Answer 1

T=25+R
R=25-5=20
20+25=45
T=45
R=20

Answer 2

Structured method:

Let Ron's age be x
Terry is x+25

in 5 years:
Ron's age = x+5
Terry's age = x+30

x+30 = 2(x+5)
x+30 = 2x+10
20 = x

Ron is now 20 and Terry is 45 years old