The sum of Mr Lee and his son;s age is 60 years. Six years ago, Mr Lee's age was trice that of his son. How old is each of them now?

Question

The sum of Mr Lee and his son;s age is 60 years. Six years ago, Mr Lee's age was trice that of his son. How old is each of them now?

Answer 1

L+S = 60

L=60-S

L-6 = 3(S-6)

60-S -6 = 3S -18

4S = 72

S= 18 years old now for the son

L=60-18 = 42 years old now for Mr. Lee

six years ago they were 12 and 36

36 is 3 times 12

that all assumes "trice" means thrice or 3 times?

if you meant twice, then

60-S-6 = 2(S-6)

54-S = 2S-12

3S = 66

S =22

L=38

6 years prior they'd be 16 and 32

32 is twice 16