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COUNTRY_BOY_HATES_PCS
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2. The manager of a fish store has water that is 10% salt and water that is 25% salt. He needs to fill an aquarium with 5 gallons of water that is 20% salt.
a. Write a system of linear equations that you can use to determine how many gallons of each type of salt water the manager should combine. Be sure to define your variables.
b. Solve the system and determine how many gallons of each type of salt water the manager should combine.
 11 months ago
 11 months ago
COUNTRY_BOY_HATES_PCS Group Title
2. The manager of a fish store has water that is 10% salt and water that is 25% salt. He needs to fill an aquarium with 5 gallons of water that is 20% salt. a. Write a system of linear equations that you can use to determine how many gallons of each type of salt water the manager should combine. Be sure to define your variables. b. Solve the system and determine how many gallons of each type of salt water the manager should combine.
 11 months ago
 11 months ago

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ksrakhilesh Group TitleBest ResponseYou've already chosen the best response.0
10x+25y=20(x+y) x+y=5
 11 months ago

*STAR* Group TitleBest ResponseYou've already chosen the best response.0
ok so what part of this do you not understand
 11 months ago

COUNTRY_BOY_HATES_PCS Group TitleBest ResponseYou've already chosen the best response.0
None of it... _
 11 months ago

*STAR* Group TitleBest ResponseYou've already chosen the best response.0
umm ok wow, hold on i'll try and solve it
 11 months ago

ksrakhilesh Group TitleBest ResponseYou've already chosen the best response.0
10 percent 5/3 gallons 25 percent 10/3 gallons
 11 months ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
@COUNTRY_BOY_HATES_PCS Do you understand it now?
 11 months ago

heather040200 Group TitleBest ResponseYou've already chosen the best response.1
Let x = amount of 10% salt and y = amount of 25% salt x + y = 5 Two ways (which are quite equivalent): #1: Find ratio of x to y, independent of the actual volume: x / 10 + y / 4 = (x + y) / 5 4x + 10y = 8x + 8y 4x = 2y y = 2x Then bring in the total volume: x + y = 5 x + 2x = 5 3x = 5, x = 5/3, y = 2x = 10/3 #2 More traditional method y = 5  x (Salt from x) + (salt from y) = (total salt in the mix) .10 x + .25 (5  x) = .2 * 5 = 1 10x + 125  25x = 100 15x = 25 x = 5/3 y = 5  5/3 = 10/3
 11 months ago

kathy0514 Group TitleBest ResponseYou've already chosen the best response.0
http://www.algebra.com/algebra/homework/word/Linear_Equations_And_Systems_Word_Problems.faq.question.684153.html that might help
 11 months ago
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