Sean and Barry are practicing in a 30-mile bike race. Sean averages 20 miles per hour and Barry averages 15 miles per hour. Howm many miles will Barry be from the finish line when Sean finishes the race?
At 20 miles per hour, Sean should finish the race in 1.5 hours.
30/20 = 1.5
After 1.5 hours, Barry should have ridden 22.5 miles, making him 7.5 miles from the finish line.
15 miles in 1 hour and 7.5 miles in 0.5 hours.
To find out how many miles Barry will be from the finish line when Sean finishes the race, we need to calculate the time it will take for Sean to finish the race.
Step 1: Calculate the time it takes for Sean to finish the race.
Distance = Speed × Time
Time = Distance / Speed
Time = 30 miles / 20 miles per hour
Time = 1.5 hours
Step 2: Calculate how far Barry will have traveled in 1.5 hours.
Distance = Speed × Time
Distance = 15 miles per hour × 1.5 hours
Distance = 22.5 miles
Therefore, Barry will be 22.5 miles from the finish line when Sean finishes the race.
To find out how far Barry will be from the finish line when Sean finishes the race, we need to calculate the time it will take for Sean to finish the race and then multiply that time by Barry's average speed.
First, let's find out how long it will take Sean to complete the race. We can use the formula:
time = distance / speed
Since Sean averages 20 miles per hour, and the race is 30 miles long, we can substitute these values into the formula:
time = 30 miles / 20 miles per hour
Simplifying, we get:
time = 3/2 hours
So it will take Sean 3/2 hours to finish the race.
Now, let's find out how far Barry can go in this time. We can use the formula:
distance = speed * time
Since Barry averages 15 miles per hour and the time it takes Sean to finish is 3/2 hours, we can substitute these values into the formula:
distance = 15 miles per hour * 3/2 hours
Simplifying, we get:
distance = 45/2 miles
So, when Sean finishes the race, Barry will be 45/2 miles from the finish line.