it takes engineer 3 hrs to drive to his brother's house at an average of 50 miles per hour. if he takes same route home, but his

Question

3 years ago

6

average speed of 60 miles per hour, what is the time, in hours, that it takes him to drive home?

2 answers:

Katarina [22] · Answer 1 · 2022-10-31T02:36:51+03:00

7 0

Answer:

t2 = 2.5 hours.

Step-by-step explanation:

The distance is the same.

d = r * t

The rates and times are different so

t1 = 3 hours

t2 = X

r1 = 50 mph

r2 = 60 mph

r1 * t1 = r2*t2

50 * 3 = 60 * t2

150 = 60 * t2

150 / 60 = t2

t2 = 2.5

jasenka [17] · Answer 2 · 2022-10-31T04:33:04+03:00

Answer:

Answer: Travel Time is 2 hours & 30 minutes

Step-by-step explanation:

Original Journey Time is 3 hours, Speed is 50 mph, Distance is 150 miles

Original Distance is 150 miles, New Speed is 60 mph.

Also Combined Distance was 300 miles, Combined Time was 5 hours & 30 minutes. therefore: Average Speed for complete round trip is 54. 54 mph