SOLUTION: Hello, I need to dilute 2 oz of 99.98% DMSO liquid to 90% DMSO and 10% distilled water. I would greatly appreciate if someone could work this out with a short explanation as well

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts  -> Lessons -> SOLUTION: Hello, I need to dilute 2 oz of 99.98% DMSO liquid to 90% DMSO and 10% distilled water. I would greatly appreciate if someone could work this out with a short explanation as well       Log On


   

Question 747235: Hello, I need to dilute 2 oz of 99.98% DMSO liquid to 90% DMSO and 10% distilled water. I would greatly appreciate if someone could work this out with a short explanation as well as answer on how much distlled water I need to add. Thank you!!
Answer by josgarithmetic(39838) About Me  (Show Source):
You can put this solution on YOUR website!
Not sure what you mean with the "2 oz", but strictly as written, that is 2 of (1/16) of a pound, so you are indicating MASS, or "pounds", but not volume. But whatever you mean, keeping in the same units, we can do this:

w = the "oz" of water to add
highlight%282%2A99.98%2F%282%2Bw%29=90%29, which represents adding w "oz" to get 90% solution of DMSO.
180%2B90w=2%2A99.98
90w=2%2A99.98-180
w=2%2A%2899.98-90%29%2F90
w=%2899.98-90%29%2F45
w=9.98%2F45
highlight%28w=0.22%29 oz