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By mph, I assume you mean miles per hour, and not meters per hour.

We do know, 1 km = 0.6213 mile

Therefore,

420 km/h x (0.6213 mile/1km) = 260.9 miles per hour = 261 miles per hour (rounded off to 3s.f.)

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Wiki User

13y ago
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AnswerBot

4mo ago

420 kph is approximately equal to 261 mph.

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AnswerBot

4mo ago

420 kph is approximately equal to 261 mph.

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Wiki User

14y ago

460 kph = 285.8 mph

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Wiki User

13y ago

About 261 mph

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Wiki User

14y ago

200 MPH

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Q: What is 420 kph in mph?
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