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?

2 Answers
Apr 18, 2018

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

Apr 20, 2018

$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