<PRE><B>Question 665437</B>
Tory pilots her boat 40 km before docking. Emilio continues for another 2 hr, traveling a total of 100 km before docking. How long did it take Tory to navigate the 40 km?

Let their  speeds = x km/h

time taken by tory = 40/x hours to dock

Emilio pilots for another 2 hours = (40/x)+2) hours

Emilio pilots 100 km for (40/x)+2) hours

d/t=r

100/ (40/x) +2) =x

100 = x(40/x) +2)

100= 40+2x

2x= 60
x= 30 
Tory takes 40 /30 = 4/3 hours for 40 km.</PRE>