Arocket car on the bonneville salt flats is traveling at a rate of 640 miles per hour. how much time would it take for the car to travel 384 miles at this rate?

0.6 hour    or      36 minutes

Step-by-step explanation:

We can use proportion to solve this problem.

640 miles =  1 hour

384 miles   =  x

cross-multiply

640 x   =  384

Divide both-side of the equation by 640

 =  

(On the left-hand side of the equation 640 at the numerator will cancel-out 640 at the denominator, while on the right-hand side of the equation 384 will be divided by 640)

x  =    

x  = 0.6 hour

or

x = 0.6×60 = 36 minutes

Therefore the time it would take the car to travel 384 miles is 0.6 hour  or  36 minutes  

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step-by-step explanation: