Question

Joseph can swim 150 m in 60 seconds.
What is his speed in km/hr ?​

Answer 1

Answer:

9km/hr

Step-by-step explanation:

its your answer

therefore his speed is 9km/hr

Answer 2

Step-by-step explanation:

$150m = \frac{150}{1000} km = \frac{3}{20 \:} km$

$60sec \: = \frac{60}{60 \times 60} hr = \frac{1}{60} hr$

Therefore,

$speed = \frac{distance}{time}$

$= \frac{ (\frac{3}{20})km }{ (\frac{1}{60})hr }$

$= \frac{3}{20} \times 60 \: km \: per \: hr$

$= 9 \: km \: per \: hr$

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