Question

a truck driver must complete a 180-mile trip in 4hours. if he average 50miles an hour for the first three hours of his trip, how fast must he travel in the final hour​

Answer 1

Answer:

he should travel 50 km per hour

Answer 2

Answer:

please mark me as BRAIN LIST

Step-by-step explanation:

D= S×T

Initially driver average Speed (s) = 50km/h

So for 3 hour he covers a distance (D) = 50 km/h ×3h=150km

Now distance left= 180km - 150km = 30km

So Speed (s) = Distance÷Time

For last hour he needs a speed = 30km ÷1hr =30km/hr