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It's speed - which is 90 Km/h

Q: What quantity can you calculate if you know that a car travels 30 kilometers in 20 minutes?

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It is 409764

If we divide 575 kilometers by 50 minutes we can find how fast the plane travels per minute.575/50 = 11.5We know the plane travels 575 in 50 minutes, but we need to know how far it travels in 60 minutes. Knowing that it travels 11.5 kilometers per minute, we can multiply that by 10 and add it to 575.11.5*10=115115 + 575 = 690 km

If a horse travels at 25 kilometers per hour for a half hour (30 minutes), it will travel 12.5 kilometers.

14.634 kilometers per hour.

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Hint: There are 60 minutes in an hour...

It is 409764

If we divide 575 kilometers by 50 minutes we can find how fast the plane travels per minute.575/50 = 11.5We know the plane travels 575 in 50 minutes, but we need to know how far it travels in 60 minutes. Knowing that it travels 11.5 kilometers per minute, we can multiply that by 10 and add it to 575.11.5*10=115115 + 575 = 690 km

If a horse travels at 25 kilometers per hour for a half hour (30 minutes), it will travel 12.5 kilometers.

90 kilometres per hour.

14.634 kilometers per hour.

2750 metres.

Hint: 10000 meters = 10 km, 30 minutes = ½ hour... 10,000 meters in 30 minutes = 10 kilometers per 0.5 hour = 20 kilometers per hour

40m in 20 minutes 120m in 60 minutes or 1 hour 0.12km in 1 hour

The runner's speed is 3 kilometers per 30 minutes. In somewhat more familiar units, it's also 6 km per hour.

73.85 kilometers per hour.