Question: I'm stuck on this math problem: Rafael works 10 hours on Monday and 8 hours on Tuesday on his delivery job. With 20 hours left to work in the week, how much money does Rafael make if he is paid $20 per hour?
Can you help?
Answer: 
The total number of hours that Rafael has worked by Tuesday is 8+10 = 18 hours.
To complete his assigned work hours, Rafael works 20 hours more, making his total weekly hours to be 18+20 = 38 hours.
Since he is paid $20 per hour, he makes $20*38 = $760 a week.