Crane A can unload a ship in 10 hours and crane B can unload it in 14 h. How long will it take the two cranes to unload the ship working together? What is the correct equation to solve this problem

Question

anonymous · Answer

Hahah hella funny im doing this in math 120 hold on

anonymous · Answer

mine bellow is the same i just cant solve

anonymous · Answer

a*10=1           b*14=1         a = 1/10   b = 1/14

anonymous · Answer

( 1/10 + 1/14 ) X  = 1 (job)

anonymous · Answer

LCD is 140, so its 14 + 10 = 140

anonymous · Answer

okay

anonymous · Answer

24 X = 140
  x =  140/24!

anonymous · Answer

almost proud of myself hahah, i got one like that but its using water and stuff. Cant solve : /

anonymous · Answer

Probally wanna simplify that 140/24

anonymous · Answer

Okay.   Here is another one$$\frac{ a }{ 4 }-9=5$$

anonymous · Answer

just make it 1/4 - 9/1 = 5/1, find an LCD which is 4

anonymous · Answer

A.	-16
	B.	-56
	C.	56
	D.	16