Question

Liam bought a comic book and had $5 left. If he had a total of $8 walking into the store, how much did he spend on the comic book?

Liam used the equation 5x=8 to model the problem. He said that x represents the amount of money he spent. Liam said that the solution, x=1.6, means that he spent $1.60. Is he correct? Why or why not? If he is incorrect find the correct answer showing your work.

Pls Help Me

Answer 1

Answer: The comic book was $3.

Explanation:

Instead of 5x=8, it should have been 5+x=8 because he only purchased a single comic book. Subtract 5 from 8 and your X value is 3.

Answer 2

Liam spent $3 on the book.

Explanation:

Liam bought a comic book and had $5 left.

He had a total of $8 walking into the store, so he spent
`8-5=3` dollars on the comic book.

Liam used the equation 5x=8 to model the problem.

This is wrong. The correct form would have been
`8-x=5` or
`5+x=8` where x represents the amount of money he spent.

Hence, Liam spent $3 on the book.