Question

A train travels 700 meters in 35 seconds. What is its speed in km/h?

Answer 1

Answer :-

Distance (S) = 700m

= 700÷1000 Km

Time (T) = 35 sec

= 35÷ 3600 Hours

SPEED = DISTANCE ÷ TIME

= 700 upon 1000 ÷ 35 upon 3600

= 700 upon 1000 × 3600 upon 35 [ Reciprocal]

Speed = 72 Km per Hour

Answer 2

The speed of train is 7.2 km/hr

Step-by-step explanation:

1000 m = 1 km

1 m = 0.001 km

700 m = $0.001 \times 700 = 0.7 km$

Distance traveled by train = 700 m = 0.7 km

3600 seconds = 1 hour

1 second = $\frac{1}{3600}$ hour

35 seconds = $\frac{35}{3600}$

$Speed = \frac{Distance}{Time} = \frac{0.7}{\frac{35}{3600}}=72 km /hr$

Hence The speed of train is 72 km/hr

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