Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 33.0 and half the distance at 80.0 . On her return trip, she drives half the time at 33.0 and half the time at 80.0 .

Question

Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 33.0  and half the distance at 80.0 . On her return trip, she drives half the time at 33.0  and half the time at 80.0 .

anonymous · Answer

What is Julie's average speed on the way to Grandmother's house?

anonymous · Answer

What total distance did she travel?

turingtest · Answer

(total distance)/(total time)=average speed
each travel time is distance over velocity
t1=50/33
t2=50/80
so then we plug in the numbers into the formula
average speed =100/(t1+t2)