Question

The ratio table shows the costs for different amounts of bird seed. Find the unit rate in dollars per pound.

Amount (pounds) 5 10 15 20
Cost (dollars) 11.5 23 34.50 46

Answer 1

2.3 dollars

Explanation:

Given:

Ratio table that shows the costs for different amounts of bird seed

To find: the unit rate in dollars per pound

Solution:

Amount (pounds) 5 10 15 20

Cost (dollars) 11.5 23 34.50 46

Here,

`(5)/(11.5)=(50)/(115)=(10)/(23)\\\\(10)/(23)=(10)/(23)\\\\(15)/(34.50)=(1500)/(3450)=(150)/(345)=(30)/(69)=(10)/(23)\\\\(20)/(46)=(10)/(23)`

Therefore,

`(5)/(11.5)=(10)/(23)=(15)/(34.50)=(20)/(46)`

Cost of 10 pounds = 23 dollars

So, cost of 1 pound =
`(23)/(10)=2.3` dollars