An emergency vehicle travels 10 miles at a speed of 50 miles per hour. How fast must the vehicle travel on the return trip if the round-trip travel time is to be 20 minutes?

Question

anonymous · Answer

as the first step find out the time taken by the vechile to cover 10 miles

anonymous · Answer

how...?

anonymous · Answer

use the formula 
time = distance / speed

anonymous · Answer

time=10/50= 0.2= 0.2*60= 12 minutes...  now what should be done @ Shizen

anonymous · Answer

round trip time covers the time to go and then come back
so you need to subtract it from the roundtrip time which is given to be 20
convert that time into hour
and then you need to use the formula
speed = distance/time

anonymous · Answer

thanks... got my answer... bundle of thanks...

anonymous · Answer

your welcome :D