Question

A train travels 250 kilometers in 42 hours. How long will it take to complete a journey of 35 kilometers?

Answer 1

Answer:

Distance traveled, elapsed time and average speed are always involved in uniform motion problems. their forms are distance traveled = speed * elapsed time, speed = distance traveled / elapsed time and elapsed time = distance traveled / speed. The given data are d = 250 km, v = 50 km/h and t = ???.

Solving for the elapsed time

elapsed time = distance traveled / speed

elapsed time = 250 km / 50 km/h

elapsed time = ??? hours, I know you can do the designated division.

Step-by-step explanation:

Hope it help u please mark me brain list

✧༺♥༻✧

Answer 2

Answer :-

Given:Total distance covered = 250 kmSpeed in the first part of the journey = 40 km/hSpeed in the second part of the journey = 70 km/hSpeed in the third and final part of the journey = 18 km/hFormula used:Speed = Distance/TimeAverage speed = Total distance/Total TimeCalculation:Average speed = 250/{(20/40) + (140/70) + (90/18)}⇒ 250/[(1/2) + 2 + 5]⇒ 250/(15/2)⇒ (500/15)⇒ 33.33 km/h∴ The average speed of the whole journey is 33.33 km/h

Please mark as brain list