Samin can run 5 kilometers in 30 minutes. Assuming she keeps a constant pace, how many kilometers can she run in 45 minutes?
Never mind I got the answer it is 7.5 km
Go for a ratio:
5 km/30 min = x km/45 min
x = 45(5)/30 km
= ....
To find out how many kilometers Samin can run in 45 minutes, we can use the idea of proportionality. We know that Samin can run 5 kilometers in 30 minutes.
If you observe closely, you can see that the ratio of distance covered to time taken is constant. In other words, the ratio of kilometers to minutes remains the same as long as Samin maintains a constant pace.
To find out how many kilometers Samin can run in 45 minutes, we can set up a proportion:
5 km / 30 min = x km / 45 min
To solve this proportion, we cross-multiply and then divide:
30 min * x km = 5 km * 45 min
30x = 225
x = 7.5
Therefore, Samin can run 7.5 kilometers in 45 minutes.