System of Equations

Mathematics
Tutor: None Selected Time limit: 1 Day

Alicia is helping her chemistry teacher prepare for lab. The chemistry stockroom has a jar labeled 25% hydrochloric acid and another labeled 40% hydrochloric acid. If 90ml of 30$ solution are needed for today's lab experiment, how much of each should mix together?

Sep 8th, 2015

Thank you for the opportunity to help you with your question!

let x be amount of 25% HCL required

let Y be amount of 40% HCL acid required

X+Y = 90

X= 90-Y

0.25X+ 0.4Y = 0.3*90

0.25 (90-Y) +0.4Y = 27

22.5 -0.25Y +0.4Y =27

0.4Y-0.25Y=27-22.5

0.15Y = 4.4

Y=4.5/0.15

Y= 30ML

X= 90-30 = 60 ML

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 8th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Sep 8th, 2015
...
Sep 8th, 2015
Dec 10th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer