Question

Alan has a tutoring business. For each hour he tutors, he earns $50. In addition to a $75 newspaper ad, his expenses per session include $5 in materials and $2 in transportation. How many hours must Alan tutor before he makes a profit?

Answer 1

In 2 hours he would have spent $89, (the 1-time $75 newspaper add plus two days worth of expenses for session and materials, which is 2*7, which equals 14. Now add 14 + 75, which equals $89) But he would have made $100 dollars by then, so he would have a profit of $11, so the answer is 2 hours.