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

Then, Speed = $$\frac{Distance}{Time}$$

Speed there $$=\frac{x}{3}km/hr$$

Speed back $$\frac{x}{4}km/hr$$

Average speed $$=\frac{2x}{3+4}$$

$$=\frac{2x}{7}km/hr$$

$$\frac{2x}{7}=6$$

$$2x=7\times6$$

$$2x=42$$

$$x=21km$$

Therefore, the distance is 21 km and average speed while going towards Guam should be 7 km/hr.