Question

In the morning, Margret drove to a business appointment at 50 mph. Her average speed on the return trip in the afternoon was 40 mph. The return trip took (1/4) hours longer because of heavy traffic. How far did she travel to the appointment?

Answer 1

50 km

Answer 2

if she travelled x km, then
\[x/40-x/50=1/4 \]
or, \[x/200=1/4.\]
hence you will get x as 50