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
MAXIMILIAN C.
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#

Tony B
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#

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