Question 664560
if the biker travels 10 miles in 2 hours, then the biker is traveling 5 miles per hour.


if the biker travels 5 miles per hour, then the biker travels 5 * 3.5 = 17.5 miles in 3.5 hours.


if you are asking how long will it take him to ride 3.5 miles, then the amount of time it will take will be 3.5 / 5 hours which is equal to .7 hours.


the basic equation you are looking for is rate * time = distance.


if the biker travels 10 miles in 2 hours, then this equation becomes rate * 2 = 10


you solve for rate to get rate = 10/2 = 5 miles per hour.


now that you have the rate, you can apply it to the second part of the problem.


the last part of your question was confusing.


you said.....


how long will it take him to ride 3.5 hours


this should have either been ...


how long will it take him to ride 3.5 miles.


or it should have been .....


how far can he travel in 3.5 hours.


assuming you anted to know howw long will it take him to ride 3.5 miles, then the same equation of rate * time = distance becomes 5 * time = 3.5 and you solve for time to get time = 3.5 / 5 hours


assuming you anted to know how far can he travel in 3.5 hours, then the same equation of rate * time = distance becomes 5 * 3.5 = distance and you solve for distance to get distance = 17.5 miles.