Question

Austen's retirement party will cost $10 if he invites 5 guests. If there are 7 guests, how much will Austen's retirement party cost? Solve using unit rates.

Answer 1

Answer: $14

Explanation:

First, find the amount it will cost with one guest(x):

`(10)/(5) =(x)/(1) \\\\10=5x\\\\x=(10)/(5) =2`

Then, use ratios to find the amount it will cost with seven guests(y):

`(2)/(1) =(y)/(7) \\\\y=14`

Not sure if this is how you want it to be solved.