Eduard traveled for 4 hours eastbound. Emil, who went 10 mph faster, left from the same spot, westbound, and traveled 7 hours. They started 680 miles apart. How fast did Eduard travel?
Round to the nearest mile per hour if necessary.
61 mph
62 mph
55 mph
65 mph

Question

Eduard traveled for 4 hours eastbound. Emil, who went 10 mph faster, left from the same spot, westbound, and traveled 7 hours. They started 680 miles apart. How fast did Eduard travel?
Round to the nearest mile per hour if necessary.  
    61 mph  
   62 mph  
   55 mph  
   65 mph

anonymous · Answer

plz help saifoo

anonymous · Answer

How can they leave from the same spot and start 680 miles apart?

anonymous · Answer

idk.....tht's wat it said in the textbook

saifoo.khan · Answer

)there is a mistake . It should say they ended 680 miles apart, since they started from the same point.
Let r= Ed.'s Rate
Then r+10= Emils Rate

Now Rate *time=Distance
Their times are 4 and 7 and the total distance is 680

So (r)(4)+(r+10)(7)= 680

Now solve the equation, r= 55 mph

anonymous · Answer

I think it should say they started at the same time...

anonymous · Answer

Actually, what I really think is u should get a better textbook.

saifoo.khan · Answer

haha.