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
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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
