Answer: 441 miles.
Explanation:
First, we have to try to find how many miles he can drive in 1 hour. To do this, we need to divide 315 by 5. This will give us 63. So now we know that 63 miles = 1 hour.
Next, now that we know the how many miles he drives in an hour, we use 63 in this equation: 7(miles in an hour). If we transfer all of the values into the equation, the equation will be: 7(63) or 7 x 63.
Then, now we know the equation we need to solve the problem. We have to solve it. So 7 x 63 is 441 miles.
Finally, we solved the problem!
