SOLUTION: a train travels 60 km/hr for 0.52 hour, 30 km/hr for next 0.24 hr and then 70 km/hr for next 0.71hr what is the average speed for the trip?
Algebra.Com
Question 636389: a train travels 60 km/hr for 0.52 hour, 30 km/hr for next 0.24 hr and then 70 km/hr for next 0.71hr what is the average speed for the trip?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
a train travels 60 km/hr for 0.52 hour, 30 km/hr for next 0.24 hr and
then 70 km/hr for next 0.71hr
what is the average speed for the trip?
:
Find the total distance of the trip; (dist = speed * time)
d = (60*.52) + (30*.24) + (70*.71)
d = 31.2 + 7.2 + 49.7
d = 88.1 km
:
Find the total time for the trip
t = .52 + .24 + .71
t = 1.47 hrs
:
Find the av speed (a = d/t)
a =
a = 59.932 ~ 60 km/hr av speed for the trip
RELATED QUESTIONS
A car travels at 95 km/hr for 2 hrs. at 65 km/hr for the next 3 hrs and finally at 75... (answered by Alan3354)
A car travels at 1000 meters per min for 2 hour, at 80 km / hr for next 3 hr, and finally (answered by josgarithmetic)
if you bike a distance of 10 km at 30 km/hr, and then return at 20 km/hr, what is the... (answered by josgarithmetic)
A train runs for 2 hours at speed of 40 km/hr. It run for 4 1/2 hour at speed of 60... (answered by Alan3354)
if a train travels from a to b at 100 km/hr and returns at 20 km/hr, what is the average... (answered by MathTherapy)
Tarun travels a distance of 24 km at 6 km/hr another distance of 24 km at 8 km/hr and a... (answered by ewatrrr)
93. A car travels the first one-third of a certain dis-.tance with a speed of 10 km/hr,... (answered by ankor@dixie-net.com)
A Motorist travels 90 kms. with the speed of 60 km/hr and the next 40 kms distance with... (answered by richwmiller,ankor@dixie-net.com)
a driver travels 300km at 100km/hr. Return trip travels at 60km/hr on return trip. what... (answered by Alan3354)