a = 3c
b = a-6
b = 4d
a+b+c+d = 39
(a,b,c,d) = (18,12,6,3)
Four brothers in one family have a combined age of 39 years. Alan is three times collins age, bill is 6 years younger than Alan and don is a quarter of bills age. How old are each of the four browser
1 answer