how abundant mls of the injection?

if an injectable contains 20% of mannitol, how many mls of the injection should be administered to provide 100gm of mannitol?
please show ur workhow abundant mls of the injection?
Percentages are grams/100ml
So, 20% solution= 20grams/100mls
100gm/ X mls = 20 grams/100 mls
solving for X mls yield:
(100 gm)100mls/20grams = X mls
X mls = 500 mls
You will not succeed if you do not do your own homework.
You gotta work this out yourself!! 20% = 20g in 100ml
so 100gm is 5 times this.. It's not rocket science.