Question 1151474

A man's age is 6 less than three times his son's age.the sum of their age is 58.how old is the man's age?
<pre>Let man's age be M, and son's, S
Then we get: M = 3S - 6 ------- eq (i)
Also, M + S = 58____S = 58 - M ------ eq (ii)
M = 3(58 - M) - 6 ------ Substituting 58 - M for S in eq (i)
M = 174 - 3M - 6
4M = 168
M, or {{{highlight_green(matrix(1,6, Man, is, 168/4, "=", 42, years-old))}}}