Pls pls help - Suppose the velocity of a car starting from rest is given by
V= 200t/(2t+8) where v is the velocity in mph and t is the time in seconds. Find the number of seconds when the velocity is 50 mph

Question

Pls pls help - Suppose the velocity of a car starting from rest is given by
V= 200t/(2t+8)  where v is the velocity in mph and t is the time in seconds.  Find the number of seconds when the velocity is 50 mph

dumbcow · Answer

solve for t
V(2t+8) = 200t
2Vt + 8V = 200t
8V = 200t - 2Vt
8V/(200-2V) = t
replace V with 50
t = 8*50/(200-(2*50))
t = 400/100 = 4