Mary earns $10 per hour and $5 for each delivery she makes. She wants to earn more than $140 in an 8-hour workday. What is the least number of deliveries she must make to reach her goal?
She must make 12 deliveries to reach her goal. Reason is you do 10*8=80 Then take the 80 and do 140-80=60 Then you take the 60 remainder and do 60/5=12 deliveries
