<PRE><B>Question 293667</B>
Raphael can load a large shipping truck in 15 hours. Working together, Raphael and Jana can load the same truck in 6 hours. How long would it take Jana to load the truck by herself?
---------------------------
Rachael rate = 1/15 job/hr.
---
Together rate = 1/6 job/hr
---
Jana rate = 1/x job/hr
---
Equation:
rate + rate = together rate
1/15 + 1/x = 1/6
Multiply thru by 30x to get:
2x + 30 = 5x
3x = 30
x = 10 hr (time Jana needs to do the job alone)
==================================================
Cheers,
Stan H.</PRE>