SOLUTION: Assef wants to create 50 oz of isopropyl solution of strength 78%.he has on hand some isopropyl solution of strengths 50% and 90%. how much of each solution should be used

Question 579474: Assef wants to create 50 oz of isopropyl solution of strength 78%.he has on hand some isopropyl solution of strengths 50% and 90%. how much of each solution should be used
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ounces of 50% solution needed
Let = ounces of 90% solution needed
given:
(1) ounces
(2)
------------------------
(2)
(2)
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)

and, since
(1)
(1)
(1)
(1)
15 ounces of 50% solution is needed
35 ounces of 90% solution is needed
check answer:
(2)
(2)
(2)
(2)
(2)
OK

RELATED QUESTIONS
Harvey wants to create 20 oz of iodine solution of strength 15%. He has on hand some... (answered by Alan3354)

You have been asked to mix up some 70% isopropyl alcohol solution. You have 95% isopropyl (answered by stanbon)

JEN HAS A SOLUTION THAT IS 55% ISOPROPYL ALCOHOL AND A SOLUTION THAT IS 20% ISOPROPYL... (answered by Alan3354)

How many mililiters of 70% isopropyl alcohol should be mixed with 20 mililiters of water... (answered by jorel1380)

Joseph mixed a certain amount of 10% isopropyl mixture with 60 gallons of a 20% isopropyl (answered by ptaylor)

Joseph mixed a certain amount of 10% isopropyl mixture with 6o gallons of a 20% isopropyl (answered by rossiv53)

John mixes a certain amount of 10% isopropyl mixture with 60 gallons of a 20% isopropyl... (answered by josmiceli)

Joseph mixes a certain amount of 10% isopropyl mixture with 60 gallons of a 20% isopropyl (answered by stanbon)

Joseph mixes a certain amount of 10% isopropyl mixture with 60 gallons of a 20% isopropyl (answered by josmiceli)