Answer:
Each person will get $2.66 back.
Explanation:
First you multiply 5 by 10 because there are a total of 5 friends that will pay $10 each.
You now have $50 which is all of the money of the friends combined.
The bill was $36.70 So you will need to subtract the bill from the money that the friends put in ($50-36.70) Which leaves the friends with $13.30 in left over change.
You now need to disperse the left over change amoung the 5 friends.
$13.30 devided by 5 is $2.66
Each friend will get $2.66 in change back.