I travel to 900km on one particular day, on my return trip my speed is such that it takes me 2hrs less to get back. How long are the individual trips and whats my return speed?

Question

anonymous · Answer

$$ v_1 = \frac{900km}{t_1} $$
$$v_2 = \frac{900km}{t_1-2}$$
focus on the $v_1$
$$t_1 = \frac{900km}{v_1}$$
put this equation into $v_2$
$$ v_2 =  \frac{900km}{\frac{900km}{v_1}-2}$$
This is how far I got... do you have some more information?

amistre64 · Answer

distance = distance right?

amistre64 · Answer

lol ... making up questions tends to be harder than it looks ;)

amistre64 · Answer

you gain a certain appreciation for the questions in a textbook after doing it for awhile; its a conspiracy i tell ya :)

anonymous · Answer

Lol no actuali I should have said V2 is 20km/h hire. ignore my last comment

anonymous · Answer

yeah, has a habit of actually having an answer :P

anonymous · Answer

I remember this from high school, about 4yrs ago

anonymous · Answer

90