What is the velocity of a car (in miles per hour) if it goes 40 miles in 35 minutes?

Answer 1

You need to think about both bits of fact as individual rations. Your car traveled 40 miles in 35 minutes. You are looking at the velocity if the car travels at 60 mph. This means that the ratio is 60/1. The ratio traveled is 40/35. So, you write this out as 40/35 x 60/1.

This gives you 40 x 60 = 2400.

35 x- = 35, so your ratio is 2400/35. When you divide this out, you will find that the answer is 68.6 mph.

Answer 2

Hi Sebastian,

This is a dimensional analysis problem. You were given 40 miles in 35 minutes, so write as a quotient:

40 mi./35 min.

Now, we want miles per hour, so we need to cancel out minutes, so get minutes on the top. We know 1 hour=60 minutes, so:

40 mi./35 min. * 60 min./1 hour = 68.6 mph

Notice that minutes cancels out and we are left with miles per hour I hope this helps.