Question

You are chosen to make a coffee run for yourself and 6 co-workers.the 7 cup of coffee are all the same size and cost $55.30 total. How much does each co-worker owe you for his/her coffee?

Answer 1

So each coworker should pay you `$7.90`

Explanation:

Since you bought 7 total cups of coffee, you can find the cost per cup of coffee using the equation:
`7x=$55.30` where `x` is the price of a cup of coffee.
`x=$7.90`
So each coworker should pay you `$7.90`

Answer 2

`$7.90`

Explanation:

Using ratio but in fraction `ul("format")`. This is NOT THE SAME as a fraction

`("cost")/("count") = ($55.30)/7`

But we need the count to be 1

`("cost")/("count") = ($55.30-:7)/(7-:7) = ($7.9)/1`

So the cost for one cup of coffee is `$7.9`