Final answer:
To calculate how many kilometers you can drive in 1 hour 15 minutes at 38 mph, you must convert the speed to km/h (61.142 km/h) and the time to hours (1.25 h), then multiply them to obtain about 76.43 kilometers.
Step-by-step explanation:
The student asked: How many km could you drive in 1 hour 15 minutes at a speed of 38 miles per hour?
First, we need to convert the time from 1 hour 15 minutes into hours since the speed is given in miles per hour. 1 hour 15 minutes is 1 + (15/60) hours, which is 1.25 hours.
Next, we convert the speed from miles per hour to kilometers per hour. We know that 1 mile ≈ 1.609 kilometers. Therefore, a speed of 38 miles per hour is equivalent to 38 * 1.609 kilometers per hour, which is approximately 61.142 km/h.
To find the distance traveled in 1.25 hours at a speed of 61.142 km/h, we use the formula: distance = speed * time. The calculated distance is 61.142 km/h * 1.25 hours, which equals 76.4275 kilometers.
So, you could drive approximately 76.43 kilometers in 1 hour 15 minutes at a speed of 38 miles per hour.