Steven G
Elite Member
- Joined
- Dec 30, 2014
- Messages
- 14,582
Yes, it is correct what you wrote. Good![math]B-18(40)=120[/math][math]840-720 =120[/math]
However you have to check the other equation as well!
(SK: are you ok today??)
Suppose you found t=50 (not 40).
B-18(50)=0
Well 900 -18(50) = 0
Then B = 900 and not 840? What is going on?
You tell me who is correct and why?