Question

3 distance questions:

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?

Answer 1

11h 12min from NY to Paris.

Explanation:

2h 30min (2.5)×30mph=75m

1h 30min (1.5)x50mph=75m

1 hour longer when driving to Arkansas

11h 12min (11.2)×300mph=3360m

4h 48min (4.8)×700mph=3360m

11h 12min from NY to Paris.

Answer 2

this one actually made me think. I like your teacher.

2h 30min (2.5)×30mph=75m
1h 30min (1.5)x50mph=75m

1 hour longer when driving to Arkansas

______________________________


11h 12min (11.2)×300mph=3360m
4h 48min (4.8)×700mph=3360m


11h 12min from NY to Paris.