SOLUTION: A submarine traveled to Madagascar and back. It took four hours less time to get there than it did to get back. The average speed on trip there was 14km/h. The average speed on the

Question 886861: A submarine traveled to Madagascar and back. It took four hours less time to get there than it did to get back. The average speed on trip there was 14km/h. The average speed on the way back was 10km/h. How many hours did the trip there take?
I got 140 hrs which i think is wrong.
Answer by MathTherapy(10553) (Show Source): You can put this solution on YOUR website!
A submarine traveled to Madagascar and back. It took four hours less time to get there than it did to get back. The average speed on trip there was 14km/h. The average speed on the way back was 10km/h. How many hours did the trip there take?
I got 140 hrs which i think is wrong.



Let time to get there be T

Then time taken on return trip is:    T + 4

Distance traveled on trip there is:   14T

Distance traveled on return trip is:  10(T + 4), or 10T + 40

The distances are equal so, 

14T - 10T = 40

4T = 40

T, or time taken to get there = , or  hours

You can do the check!! 

RELATED QUESTIONS

Can you please show me the steps to do this problem?

A freight train traveled to the... (answered by josmiceli)
Ryan traveled to the ferry office and back. It took one hour less time to get there than... (answered by TimothyLamb,MathTherapy)
A cargo plane flew to Moscow and back. It took 2 hours less time to get there than it did  (answered by lwsshak3)
A cargo plain flew to the maintenance facility and back. It took one hour less time to... (answered by mananth)
A cargo plane flew to the maintence facility and back.  It took one hour less time to get  (answered by josmiceli)
A cargo plane flew to the maintenance
facility and back. It took one hour less time
to... (answered by ankor@dixie-net.com)
A cargo plane flew to the maintenance facility and back. It took one hour less time to... (answered by TimothyLamb)
A cargo plane flew to the maintenance facility and back. It took one hour less time to... (answered by stanbon)
A cargo plane flew to the maintenance facility and back. It took one hour less time to... (answered by josmiceli,MathTherapy)