Question

Lucas is 2 years older than Thomas who is 3 years older than paul. The ages of the three add up to 20. How old is each of them

Answer 1

Paul: x
Thomas: x+3
Lucas: x+3+2 = x+5

x+x+3+x+5 = 20
3x + 8 = 20
3x = 20 - 8
3x = 12
x = 12/3
x = 4

Paul: 4 years
Thomas: 7 years
Lucas: 9 years