If each ream is 32 ounces, and there are 10 reams in the case, then we need to multiply 32x10. We can simplify the problem though, so let's do that! 30x10=300 2x10=20 300+20=320. Now, there are 16 ounces in a pound. SO. We need to divide 320 by 16. 320÷16=20 we know because 32÷16=2 so we add a zero onto our answer since we added a zero onto 32. In conclusion, the answer is 20lbs