Question

Maurice bought 3 sodas and 4 candy bars for $10.17. Larry bought 2 sodas and 5 candy bars for $10.28. How much does a candy bar cost?

Answer 1

The cost of a candy bar is
`\$1.5`

Explanation:

Let

x----> the cost of a soda

y----> the cost of a candy bar

we know that

`3x+4y=10.17`-----> equation A

`2x+5y=10.28`-----> equation B

Solve the system of equations by graphing

Remember that the solution of the system of equations is the intersection point both graphs

The solution is the point
`(1.39,1.5)`

see the attached figure

therefore

The cost of a soda is
`\$1.39`

The cost of a candy bar is
`\$1.5`