A group of friends goes out to lunch and decides to split the bill. Their bill is $32. 50, plus they want to leave a 20% tip. The final amount will be split 4 ways. Hint: This is a multi step problem. First figure out the tip amount. Then add that to the bill. Then divide by 4. Question 4 options: $7. 50 $8. 15 $9. 75 $9. 50.