Math Problem please help

morte, LPN, LVN · Sep 7, 2009

I am horribly bad at math and would love if someone would explain how to solve the following problem. Thank you for any and all help.
How many ml of 50% dextrose should be added to 1L of 0.9% NaCl to make a 5% dextrose solution?
Thank you!!

what is the relationship between 50% and 5%? and go from there

dexter691 · Sep 7, 2009

Sorry Morte but that does not mean anything to me. Really bad at math. Need it explained to me like you were trying to explain it to a monkey.

morte, LPN, LVN · Sep 7, 2009

Sorry Morte but that does not mean anything to me. Really bad at math. Need it explained to me like you were trying to explain it to a monkey.

lololololol

well, i was actually hoping Daytonite would come along....

i think i have this right, but....

50% an 5% have a 1:10 ratio, so i would think 1 ml of 50% to each 10 mls of the original mixture......but perhaps it is 9 ml......this is why i want Day's opinion on this

morte, LPN, LVN · Sep 7, 2009

lololololol
well, i was actually hoping Daytonite would come along....
i think i have this right, but....
50% an 5% have a 1:10 ratio, so i would think 1 ml of 50% to each 10 mls of the original mixture......but perhaps it is 9 ml......this is why i want Day's opinion on this

http://biology.clc.uc.edu/Fankhauser/Labs/Microbiology/Dilutions.htm

yup, it is nine not ten.....just found this site....