Let x be Andy’s current age Andy: x Emma: x+4 because she is 4 yrs older than her lil bro andy and we know this cuz their dad was 4 yrs older when Andy was born than when Emma was bro Pat: 36+x cuz he is 36 yrs older than his son
x + (x+4) + (36+x) = 100 3x + 40 = 100 3x = 60 x = 20
So Andy is now 20 years old Emma’s age is 20 + 4 so she is 24 years old Pat’s is 20 + 36 = 56 years old
