Question

Finn is swimming at a constant speed.

The table compares Finn's distance from the starting point (in meters) and the time since he started (in seconds).


Time (seconds) Distance (meters)

7.25 11.6

15.25 24.4

23.25 37.2


How long does it take him to swim 50 meters?


______________ seconds

Answer 1

31.25 Seconds

Explanation:

Answer 2

31.25 s

Explanation:

We'll begin by calculating the speed of Finn.

NOTE: Finn is swimming at a constant speed. Hence we shall use any of the data given in the question above to determine the speed of Finn. This is illustrated below:

Time = 7.25 s

Distance = 11.6 m

Speed =?

Speed = distance / time

Speed = 11.6 / 7.25

Speed = 1.6 m/s

Therefore, the speed of Finn is 1.6 m/s

Finally, we shall determine the time taken for Finn to swim 50 m. This can be obtained as follow:

Speed = 1.6 m/s

Distance = 50 m

Time =?

Speed = distance / time

1.6 = 50 / time

Cross multiply

1.6 × time = 50

Divide both side by 1.6

Time = 50 / 1.6

Time = 31.25 s

Therefore, the time taken for Finn to swim 50 m is 31.25 s.