0
How many minutes will it take a runner to finish a 9 km distance race if he can run 12 km hr?
HolleyHillgp5086
Short answer: 45 minutes
Explanation: We're going to use proportions to figure this out. We have a known proportion of 12 km per 60 minutes (one hour) which we'll represent as 12/60. We then have a similar proportion with 9 km of unknown time which we'll represent as 9/X. We know these two proportions are equal so we end up with the equation:
12/60 = 9/x
Now we simplify:
12/60 = 9/X
12X = 9*60
12X = 540
X = 45
So now we know the proportion is 9 km per 45 minutes. We can also say that the runner can run 9km in 45 minutes.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
Danny has 45 minutes to take a test if he finishes half the test in 19 minutes how many minutes does he have left to finish?
26
A runner ran 2 miles in 12 minutes and 23 seconds how many inches did they run?
126,720 of them.
If a runer runs a mile in 9 minutes how fast were they running MPH?
The runner would be running at 6.67 miles per hour. This is answered by dividing 60 (minutes in an hour) by 9 (minutes it took for one mile). You are basically saying that the runner will run a mile every 9 minutes, so how many '9 minutes' (each mile ran) are in an hour.
A runner wants to run 10 km She knows that her running pace is 7 and a half miles per hour How many minutes must she run?
she must ruv 70 minutes
If the distance is 29 kilometers how many minutes is it by car?
That depends at what speed you are travelling.
How many laps on a track should runner run to finish a distance of a mile?
5
Distance runner Elva Dryer set an American road best of 19 minutes 40 seconds for how many miles in 2001?
4 miles
How many miles must a runner complete to finish a marathon?
26.2
How many mph does a olympic runner go?
The answer depends on the distance for the race. A marathon runner could not maintain the speed attained by a sprint runner.
How many mph is the average runner going?
The answer depends on the distance for the race. A marathon runner could not maintain the speed attained by a sprint runner.
How many minutes does it take to finish homework?
25min
If runnning at 8 mph how many minutes will it take to finish a mile?
About 7 minutes and 30 seconds.
Danny has 45 minutes to take a test if he finishes half the test in 19 minutes how many minutes does he have left to finish?
26
A long-distance runner can run 9 miles per hour How many hours will it take the runner to run 27 miles?
3 hours
If a runner runs 4 miles per hour how many minutes will it take him to run 700 feet?
It will take him two (1.98) minutes.
When you eat the gladiator sandwich at cafeteria el cuadrilatero it's free if you finish it in how many minutes?
15 minutes.
If a running track is 400m in total how many laps would a 10000m runner have to complete to finish the race?
10,000 / 400 = 25
