SOLUTION: To solve percent mixture problems:
How many quarts of water must be added to 5 qt. of an 80% antifreeze solution to make a 50% antifreeze solution?
my try:
Water x
Algebra.Com
Question 192446This question is from textbook Intermediate Algebra
: To solve percent mixture problems:
How many quarts of water must be added to 5 qt. of an 80% antifreeze solution to make a 50% antifreeze solution?
my try:
Water x 1.00 x
80% 75 .80 75(.80)
50% 75+x .50 .50(75+x)
x+75(80) =50(75+x)
x+6000=3750 + 50x
-49x = -2250
x = -45.91
????
Wrong?
This question is from textbook Intermediate Algebra
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
the amount of antifreeze remains constant
:
.8(5)=.5(5+x)
:
4=2.5+.5x
:
.5x=1.5
:
x=3 quarts
RELATED QUESTIONS
How many quarts of water must be added to 5 qt of an 80% antifreeze solution to make a... (answered by rfer)
How many quarts of water must be added to 9 qt of an 80% antifreeze solution to make a... (answered by mananth)
How many quarts of water must be added to 15 qt of an 80% antifreeze solution to make a... (answered by mananth)
How many quarts of water must be added to 6 qt of an 80% antifreeze solution to make a... (answered by harpazo)
How many quarts of water must be added to 13 qt of an 80% antifreeze solution to make a... (answered by josgarithmetic)
How many quarts of water must be added to 5 quarts of an 80% antifreeze solution to make... (answered by Fombitz)
how many quarts of water must be added to 5 qt of 80% antifreeze solution to make 50 %... (answered by jsmallt9)
How many quarts of water must be added to 13qt of a 80% antifreeze solution to make a 65% (answered by josmiceli)
How many liters of antifreeze must be added to 5 liters of water to make no less than a... (answered by rapaljer)