Question

The total cost of one choclate bar and two identical packs of gum is $4.15. One choclate bar costs $1.00 more than one pack of gum. What is the cost of one choclate bar?

Answer 1

Answer:2.05

use a calculator or use a online calculator and i'm right because i checked

Answer 2

Answer: The cost of one chocolate bar is $2.05

Explanation:

Let x = the cost of one chocolate bar.

Let y = the cost of one one pack of gum.

The total cost of one chocolate bar and two identical packs of gum is $4.15. This implies that the cost of two identical packs of gum would cost 2y Therefore, the equation will be

x + 2y = 4.15 - - - - - - - - - - - -1

One chocolate bar costs $1.00 more than one pack of gum. This means that

x = y + 1 - - - - - - - - - - - 2

Substituting equation 2 into equation 1, it becomes y + 1 + 2y = 4.15

y + 2y = 4.15 - 1

3y = 3.15

y = 3.15/3 = 1.05

x = y + 1 = 1.05 + 1

x = 2.05

The cost of one chocolate bar is $2.05