A motorboat can maintain a constant speed of 31 miles
per hour relative to the water. The boat makes a trip
upstream to a certain point in 37 minutes, the return trip
takes 25 minutes. What is the speed of the current?

Jackson earns $25 per hour as a tutor at the college library. he set a weekly spending budget of $130 each week and puts the remaining money in his savings account. how many hours must he work this week to have at least an extra $50 to put in his savings account