Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
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.
 7 months ago
 7 months ago
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.
 7 months ago
 7 months ago

This Question is Closed

ksrakhileshBest ResponseYou've already chosen the best response.0
10x+25y=20(x+y) x+y=5
 7 months ago

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

COUNTRY_BOY_HATES_PCSBest ResponseYou've already chosen the best response.0
None of it... _
 7 months ago

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

ksrakhileshBest ResponseYou've already chosen the best response.0
10 percent 5/3 gallons 25 percent 10/3 gallons
 7 months ago

mathstudent55Best ResponseYou've already chosen the best response.0
@COUNTRY_BOY_HATES_PCS Do you understand it now?
 7 months ago

heather040200Best 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
 7 months ago

kathy0514Best 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
 7 months ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.