Question

A train travels for 8 hours the first half of the total distance at 30 km per hour and the second of half at 50 kilometres
per hour the total distance travelled is​

Answer 1

Step-by-step explanation:

first half=4 hour

distance travelled by train in first half=4×30=120km

second half=4×50=200km

total distance=120km+200km=320km.

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Answer 2

Answer:

300 km

Step-by-step explanation:

Define x:

Let the whole journey be 2x km.

Therefore half the journey will be x km.

First half of the journey:

Distance = x km

Speed = 30km/h

time taken = distance ÷ speed

time taken = x/30 hours

Second half of the journey:

Distance = x km

Speed = 50 km/h

time taken = distance ÷ speed

time taken = x/50 hours

Solve x:

Time taken = 8 hours

x/30 + x/50 = 8

4x/75 = 8

4x = 600

x = 150 km

Find the total distance:

Total distance = 2x = 150 x 2 = 300 km

Answer: 300 km