Need help from someone with good math

[Blom]

Originally Posted by StirCrazy

thats not math its a bar room trick.


Reef93

if your going to buy two bags grab one more.. just make sure you can take it back if you don't use it. much better to return a bag then have to run buy another one at the last min.

Addition is math yes

Besides that this is great advice, I cant tell you how many times Ive had to run to a LFS for a wee bit more of something. Or better yet Home depot for one more 90 degree PVC joint.