Joe is on a cross-country trip from New York to Los Angeles. He drives for 45.0 min at 70.0 km/h, 10.0 min at 95 km/h, and 30.0 min at 55.0 km/h, and he spends 20.0 min eating lunch and buying gas. What is the average speed for this part of his trip?

Question

anonymous · Answer

avg speed = total dist/total time

anonymous · Answer

70*3/4 + 95*1/6+ 55*1/2 = total distance

anonymous · Answer

Where did those fractions come from?

anonymous · Answer

converting minutes to hours

anonymous · Answer

So what exactly does the 3/4 represent?

anonymous · Answer

60 min 1 hour
45 min 3/4 hour
10 min 1/6 hour
30 min 1/2 hour

anonymous · Answer

now get that?

anonymous · Answer

Oh okay! Thanks!

anonymous · Answer

no prob (:

anonymous · Answer

Wait so after I get the total distance=95.83 What do I do? @divu.mkr

anonymous · Answer

divide it by total time in hours

anonymous · Answer

Okay thanks again!