Marijuana is the second most common drug, this is based on biased reports however with lots of variables that should be taken into consideration completely ignored so that it can make a larger point than it would with the actual statistics.
56 minutes for 5 people to paint 10 walls multiply by 5 to get 1 persondivide by 7 to get 7 peopledivide by 10 to get 1 wall multiply by 8 to get 8 walls(56)5*8)/(10*7) minutes for 7 people to paint 8 walls2240/70 = 32 minutes
10 oz for 2.49. Hope I helped :)