if angela swims 1,700 meters in 40 mins what is her unit ratye

Question

if angela swims 1,700 meters in 40 mins what is her unit rate

Answer 1

Assuming that the unit is metres per minute:

1,700 meters in 40 mins equates to 
1700/40 = 42.5m / minute
 

(Other unit rates are possible through conversion, e.g. metres per second, kilometers per hour, etc, but I would suggest sticking to the units supplied in the question)