While flying against the wind, the plane covered 1800 km in 2 hours and 40 minutes. on the return flight it spent 16 minutes less because the plane was moving on the direction of the wind. what was the speed of the wind and the speed of the plane?

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