Question

two ships leave the port at same time and travel in opposite directions. The speed of faster ship is 8 km/h more than the slower ship. At the end of 5/2 days,the two ships are 4320 km apart. Find the speed of the two ships

Answer 1

2.5 days * 24 hours = 60 hours 
So the total speed of the ships is 4320/60 = 72 km/h 
If one ship has speed x, the other's speed is x + 8, so we have: 
x + x + 8 = 72 
2x = 72 - 8 
2x = 64 
x = 64/2 
x = 32 
So one ship goes 32 km/h and the other goes 32 + 8 = 40 km/h. this not exact answer change the value and do the sum