Well, honey, if you're walking at a leisurely pace of 3 miles per hour, it's gonna take you about 16.67 hours to cover 50 miles. But if you're driving like a bat out of hell at 60 miles per hour, you'll get there in a cool 50 minutes. So, buckle up and enjoy the ride!
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An hour is a unit of time. A mile is a unit of distance. Without some unit of speed, the two units are incompatible.
150 miles.
Convert them all to the same per x hours and then compare them. You can either convert them all to unit rates (x = 1) or some other rate (eg lcm of 16, 50, 15 and 20). I'll use unit rates: 800 miles per 16 hours = 800 ÷ 16 miles per 16 × 16 hours = 50 mph 1500 miles per 50 hours = 1500 ÷ 50 miles per 50 ÷ 50 hours = 30 mph 600 miles per 15 hours = 600 ÷ 15 miles per 15 ÷ 15 hours = 40 mph 900 miles per 20 hours = 900 ÷ 20 miles per 20 ÷ 20 hours = 45 mph 50 mph is the greatest unit rate → 800 miles per 16 hours is the greatest rate. --------------- The rates can be ordered: 50 > 45 > 40 > 30 → 800 miles per 16 hours > 900 miles per 20 hours > 600 miles per 15 hours > 1500 miles per 50 hours.
time= distance/rate =318miles / 50mph =6.36 hours
50
420 miles in 7 hours is 60 MPH (miles per hour).