Gertie ran 3/4 mile during physical education class. sarah ran 2/4 mile during the same class. how much farther did bertie run than sarah? shade the model to show your answer.

Atreasure chest sinks at a rate no less than 20 feet er second. the floor of the icean is at most at -4,200 feet. will the tresure chest reach the ocean floor in less than 3 minutes? explain.