Question

Unit Rates can also be used to solve problems....hello I'm a 7th grader can u please help me with my math summer package and explain it in a way that a 7th grader can understand

Answer 1

10)

Given:

The cost of 8 ounces of shampoo is $0.89.

The cost of 12 ounces of shampoo is $1.47.

Required:

We need to find a better deal.

Step-by-step explanation:

Consider the first deal.

The cost of 8 ounces of shampoo is $0.89.

Divide the cost of 0.89 by 8 to find the cost for one ounce.

`The\text{ cost of shampoo for one ounce=}(0.89)/(8)`
`The\text{ cost of shampoo for one ounce=\$}0.11125`

Consider the second deal.

The cost of 12 ounces of shampoo is $1.47.

Divide the cost of 1.47 by 12 to find the cost for one ounce.

`The\text{ cost of shampoo for one ounce=}(1.47)/(12)`
`The\text{ cost of shampoo for one ounce=}0.1225`

We know that $0.11125 is less than $0.1225.

The first deal is better than the second deal.

Final answer:

The best deal is,

The cost of 8 ounces of shampoo is $0.89.