Question

how long would it take you to swim across a lake that is 900 meters across if you swim at 1.5 m/s

Answer 1

$1.5m/s=lambda*900 meters \\ 900/1.5=600 lambda$

Answer 2

How long would it take you to swim across a lake that is 900 meters across if you swim at 1.5 m/s=600 hope it helps