The total cost of a sandwich, a glass of milk, and an apple is $3.50. (Other part of the question is down below)

Question

The milk costs one and a half times as much as the apple. The sandwich costs $1.40 more than the apple. What's the price of each?

Answer 1

Let x = the cost of the apple

Let (3/2)x = the cost of the milk

Let x + 1.40 = the cost of the sandwich

x + (3/2)x + x + 1.40 = 3.50

(7/2)x = 2.10

x = $.60

(3/2)x = (3/2)(.60) = $.90

x + 1.40 = .60 + .90 = $2.00