An aircraft carrier made a trip to Guam and
back. The trip there took three hours and
the trip back took four hours. It averaged 6
km/h on the return trip. Find the average
speed of the trip there

Question

An aircraft carrier made a trip to Guam and
back.  The trip there took three hours and
the trip back took four hours.  It averaged 6
km/h on the return trip.  Find the average
speed of the trip there

mathmate · Answer

It's not a very fast plane.  Can you check for typos?

anonymous · Answer

haha

mathmate · Answer

Oh, sorry, it's a carrier!

mathmate · Answer

Figure out the distance from the return trip, and divide double the distance by 7 hours.

mathmate · Answer

The one-way distance is 6km/h*4 hours = 24 km.

anonymous · Answer

Speed = Distance/Time

Speed * Time = Distance => Distance is constant.

Therefore S1 * T1 = S2 * T2

S1=6
T1=4

S2=?
T2=3

6*4 = ?*3
24/3 = ? 
? = 8km/h

mathmate · Answer

Sorry again, the average speed to go there is the distance divided by 3 hours
= 24km/3 = 8 km/h.