Andy buys x cakes. Betty buys 4 times as many cakes as andy...

Question

Colin buys 3 more cakes than andy. Each cakes cost 65 cents. The total cost of the cakes is $52.65

anyone know how many cakes each person bought?

Answer 1

B = 4A

C = A + 3

.65(A+B+C) = 52.65

A + 4A + A +3 = 81

6A + 3 = 81

6A = 78

A = 13

B = 52

C = 16

Answer 2

b = 4x

c = x + 3

x + b + c = 52.65/.65

x + 4x + x + 3 = 81

6x = 78

x = 13

b = 52

c = 16