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A train travels at an average speed of 18m/s.

1. Find the approximate time the train would take to travel 500m.

2. The train set off at 7:30 on a 40km jouney. At approximately what time will it reach its destination?​

Respuesta :

Diatonic254

(1) 27 ⁷/₉ seconds

(2) 8: 07 : 15 AM  

Step-by-step explanation:

(1)

If the trains travel 18 m in every second. How many seconds would have it cover 500m

18m : 1s

500m : ? (x) s

We cross multiply;

18 * x = 500 * 1

500/18 = x

X = 27 ⁷/₉ seconds

(2)

How long would the same train cover the 40 km journey

40km = 40 * 1000m = 40000

18m : 1 s

40000m : ? (x) s

Cross-multiply;

40000 * 1 = 18 * x

40000/18 = x

X = 2,222 2/9 seconds

2,222 / 60

37 minutes ²/₆₀ seconds

Lets add the fraction seconds;

²/₆₀ + ²/₉ = ¼ second

= 37 minutes & ¼ seconds

Lets add this to the departure time of 7: 30 AM

7: 30: 00  + 0 : 37: 15

= 8: 07 : 15 AM  

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