Question

A candy bar and a piece of bubble gum together cost $1.20 The candy bar costs a dollar more than the bubble gum. How much does the piece of bubble gum cost, in cents?

Answer 1

Answer:
x- bubble gum
x+100 - candy bar

X + x+100 = 120 (i made in cents)
2x + 100 = 120
2x = 120-100 = 20

x = 0.10$ or 10 cents (bubble gum)
x+100 = 1.10$ or 110 cents