HHow many liters of this should be drained and replaced with 100% antifreeze to get the desired strength

label Algebra
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

it is neccessary to have 40% antifreeze solution in the raditor of a certain car. the raditor now has 40 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength

Oct 19th, 2015

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

let the amount to be drained be x

amount to be left in car will be 40-x

100% x + 20% (40-x) = 40% * 40

x+ 8 - 0.2x = 16 

x-0.2x= 16-8

0.8x= 8

x= 8/0.8

x= 10 liters

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 19th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Oct 19th, 2015
...
Oct 19th, 2015
Oct 19th, 2017
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