Question 1158671
Let the man's age be {{{x}}}. His son's age is {{{x/4}}} and his wife's age is {{{x-5}}}. So we have the equation {{{x+x/4+(x-5)=103}}}. Simplifying, we get {{{9x/4=108}}}. Multiplying both sides by 4, we get {{{9x=432}}}. Dividing both sides by 9 gives {{{highlight(highlight_green(highlight(x=48)))}}}. Check, {{{48+48/4+(48-5)=48+12+43=60+43=highlight(103)}}}.