Jane drives from Alabama to Arkansas at 30 mph, then back to alabama at 50 mph without stopping. if the round-trip journey takes 4 hours, how much longer does it take jane to drive to Arkansas than it takes her to drive back to Alabama?
A plane travels with headwinds at 300 mph from NY to Paris. The return flight with tailwinds is undertaken at 700 mph. If the total flight time round-trip is 16 ours, how long does it take to go from NY to Paris?