Question 1209074
<font color=black size=3>
b = cost of bubble gum
4b+100 = cost of candy bar
Both costs are in cents.


candybar + gum = 120 cents
(4b+100)+b = 120
5b+100 = 120
5b = 120-100
5b = 20
b = 20/5
b = 4
The gum costs 4 cents.


4b+100 = 4*4+100 = 116 cents, aka $1.16, is the cost of the candy bar.
candybar + gum = $1.16 + $0.04 = $1.20 which confirms the answer is correct.



Answer: <font color=red>4 cents</font>
</font>