If the lake is 60 miles away and we may is driving 40 mph the entire time how long will it take we need to get to the lake

D=vt,    distance equals velocity times time.  Solving for t, divide both sides by v

t=d/v  we are told the distance is 60 mi and velocity is 40 mph so

t=60/40

t=3/2

t=1.5 hours  

So it will take an hour and a half to get to the lake.

5\16 x 2\5 = 10/80simplify to 1/80