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Solve by what
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Question 121873This question is from textbook Algebra Structure and Method
: I have been working on this problem for 1 hour now and I am having troubles with it. I was wondering if someone could help me with it. Please and Thank You!!
Solve by whatever method you prefer, using one or two variables.
A chemist has 800g of a dye solution that is 20% of it original strength. How much dye must be added to increase the strength to 50%?
This question is from textbook Algebra Structure and Method
You can put this solution on YOUR website! .2*800+X=.5(800+X)
160+X=400+.5X
X-.5X=400-160
.5X=240
X=240/.5
X=480g OF DYE NEEDS TO BE ADDED.
PROOF
.2*800+480=.5(800+480)
160+480=.5(1280)
640=640
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