7 years ago. 0 0. davepl. Nikki has to travel a total of 351 miles. No problem. Lv 7. 1500 miles / 50 mph = 30 hours. If he cycles for 6½ hours, how far does he travel? 30 miles per hour (60 minutes) means you are driving one mile every two minutes, therefore if you drive 20 miles it'll take (20x2) mins or 40 mins. jon_mac_usa_007. Here is how we did it: 1) Find the number of hours by dividing the distance by mph. If you could drive non-stop at a constant speed of 45 mph, it would take about 26 minutes and 40 seconds. SPEED DISTANCE. 2 Answers. 8 mph × 6.5 hours = 52 miles. For example, to go 10 miles at 20 miles per hour, you would divide 10 by 20 to find that segment would take you 0.5 hours. Don't forget to cancel on your units. To convert miles per hour to feet per second, multiply the miles per hour figure by 1.47. miles, yards, meters, kilometers, inches etc.) My car has 72500 miles. Speed Calculator Online Speed Calculator is online 3 in 1 tool. Favorite Answer. At 30 mph = 44.1 ft/sec. Show your work! My car has an automatic transmission. Should I replace trans speed sensor? Here is how we did it: 1) Find the number of hours by dividing the distance by mph. To cover 185 miles at 60 mph, divide 185 by 60 to get 3.08 hours. Answer Save. The time it takes to drive 100 miles at 80 miles per hour (mph) is displayed below in hours, minutes, and seconds: 1 hours 15 minutes 0 seconds Do you want to know how to calculate how long it takes to drive 100 miles at 80 mph? but you can also compute traveled distance having time and average speed (given in different units of speed mph, kmh, mps yds per second etc.) Compute the total drive time for each segment by dividing the number of miles in the segment by the average speed for that segment. No shifting problems or any other noted problems. :3) (Just an example just in case you are still confused . 7 years ago. There are, 5280 Feet in a mile, and 3600 Seconds in an hour, if you divide 5280 Feet by 3600 Seconds (5280 FT /3600 SEC. To find a distance, we need to multiply speed by time. Relevance. You can easily calculate average speed having time and distance (given in different units of lenght e.g. How long to drive 20 miles at 75 mph? No problem. It recently has had new brakes . It would take 12 minutes to drive 20 miles at 100 mph. Driving 100 miles will take about 1 hour and 40 minutesat a steady 60 mph She travels the first 216 miles in 4 hours. 20 mph = 20 miles in one hour so half of that is the answer 10 miles in half an hour = 30 minutes How long will it take to drive 400 miles going 75 miles per hour? 16 minutes. Chris cycles at an average speed of 8 mph. Example Question 2. and goes away again after about 20 minutes of driving over 40. The time it takes to drive 100 miles at 60 miles per hour (mph) is displayed below in hours, minutes, and seconds: 1 hours 40 minutes 0 seconds Do you want to know how to calculate how long it takes to drive 100 miles at 60 mph? It would take 30 hours if you were to drive 1500 miles at 50 mph with no breaks. The car stopped 40 minutes after it started. The m from 20m cancels the m in 75mph, giving you 75hr. Source(s): I took HS math. This is a class c motor home. 20m / 75mph * 60 min/hr = 16 minutes. Since, 40 minutes is 2/3 of an hour, we can say that the car went 30 miles per 2/3 hour. 135 miles ÷ 45 mph = 3 hours. ), you get 1.47. Multiply 30 by 2/3, and it will turn out that the car will have travel 20 miles. The problem does not come back until cold start. At 40 miles per hour, you are traveling 58.8 feet per second. It will take: 5 hours and 20 minutes (30 miles) / (40 miles per hour) = 3/4 hour = 45 minutes. 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