how long will it take for me to bike 151 km at the speed of 27 mph

Question

I'm suppose to find the time in hours, but I'm not sure how to go about it. 

Answer 1

distance = rate × time

 

distance/rate = time

 

The distance = 151 km, the rate = 27 mph.  You must first put the distance and rate into the same system of units: either change the km to miles or the mph to km/h.  1 Kilometer = 0.62 Miles.