Ask your own question, for FREE!
Mathematics
OpenStudy (anonymous):

I need to know how to set up the following problem. I can work it out, but am having trouble with the initial set up. A tank and pail contain a total of 5,136 ml of water. Jacob pours 314 ml of water from the pail into the tank. The amount of water in the tank is now seven times what is left in the pail. How much water was in the pail at first?? Please help. Need to help my son with this problem to turn in tomorrow.

7 years ago
OpenStudy (anonymous):

Let the initial amount of water in the tank be x. Let the initial amount of water in the pail be y. x + y = 5136 x +314 = 7(y - 314) Now that you have two equations and two unknown variables, you can solve for x and y.

7 years ago
OpenStudy (anonymous):

x + 314 = 7y - 2198 x + 314 = AAAGGHH!! Still confused! What am I doing wrong???

7 years ago
OpenStudy (anonymous):

seems I am having more difficulty with this one that i anticipated :-(

7 years ago
OpenStudy (anonymous):

That's alright! When you have two equations and two unknowns, you solve for x and y like this: Take one equation and solve for one of the variables: I'll use: x + y =5186 and solve for x. x = 5186 - y

7 years ago
OpenStudy (anonymous):

Then take that x, and plug it in for the x in the second equation. x + 314 = 7(y - 314) becomes... (5186 - y) + 314 = 7(y - 314)

7 years ago
OpenStudy (anonymous):

Now move the terms around and solve for y. 5186 - y + 314 = 7y - 2198 5500 - y = 7y - 2198 8y = 7698 y = 962.25 mL ---> this is the initial amount of water in the pail

7 years ago
OpenStudy (anonymous):

Check me to make sure my algebra is right. I did it a little fast.

7 years ago
OpenStudy (anonymous):

i was working it too.. u were faster than me, but we were the same up to 8y... how did u get 8?

7 years ago
OpenStudy (anonymous):

you have to collect all the "y" terms on the same side. If move the "-y" on the left to the right side with the "7y" you get 8y

7 years ago
OpenStudy (anonymous):

i really really appreciate u help

7 years ago
OpenStudy (anonymous):

still trying figure it out :-)

7 years ago
OpenStudy (anonymous):

no problem. let me know if you still are having trouble with it

7 years ago
OpenStudy (anonymous):

thank you again... really appreciate it

7 years ago
Can't find your answer? Make a FREE account and ask your own question, OR you can help others and earn volunteer hours!
Latest Questions
Heavenblici: Which pair of lines in these poetic passages uses onomatopoeia
5 hours ago 0 Replies 0 Medals
ZoeyBiocth16: math help
12 hours ago 10 Replies 0 Medals
eviant: Math help pls
9 hours ago 4 Replies 1 Medal
Brooklynexe: I CANT DRAW HALP! any tips?
12 hours ago 7 Replies 1 Medal
Jasminexx: why do we have to have art in are life?
6 hours ago 2 Replies 0 Medals
kaylak: calculus help @tranquility
13 hours ago 0 Replies 0 Medals
cathrinerose23: who likes jordans???!!! no seriously, who does???
13 hours ago 4 Replies 0 Medals
cathrinerose23: who likes jordans???!!! no seriously, who does???
14 hours ago 0 Replies 0 Medals
daytonohio: to be the high school valedictorian
15 hours ago 4 Replies 0 Medals