A car travels420 miles in 8 hours the car continues at the same rate how far will it travel in 12 hours

First you find how many miles the car travels per hour, to do so you can divide 420 miles by 8 hours:

420 miles/8 hours = 52.5 miles/hr

Now that you know the car travels 52.5 miles per hour, you can multiply it by 12 to find out how many miles the car travels in 12 hours.

52.5 · 12 = 630

The car travels 630 miles in 12 hours

12 hours is 4 hours more than 8 hours.

4 hours is half of 8 hours.

If it traveled 420 miles in 8 hours, it will travel half of that in 4 hours, or 210 miles.

In 12 hours it travels 8 hours plus 4 hours, so it travels 420 miles plus 210 miles which is 630 miles.

Answer: 630 miles