# Two tanks contain equal amounts of water. They are connected by a pipe and 3000....

#### Beatenberg

##### New member
Two tanks contain equal amounts of water. They are connected by a pipe and 3000 litres of water is pumped from one tank to the other. One tank then contains 6 times as much water as the other. How many litres of water did each tank contain originally?

#### Beatenberg

##### New member
Don't worry found the solution

#### ksdhart2

##### Senior Member
Don't worry found the solution
Hey, that's great! Glad to hear it. I hope you'll come back again if you have difficulties in the future.

#### stapel

##### Super Moderator
Staff member
Why don't you post your solution?
May help someone else...
I suspect that, by "found", the poster means exactly that. Google the exercise, and you'll "find" many complete worked solutions. ;-)

#### ksdhart2

##### Senior Member
I suspect that, by "found", the poster means exactly that. Google the exercise, and you'll "find" many complete worked solutions. ;-)
If you're correct, that's quite sad that the original poster decided to take the easy way out and not actually learn anything. They may or may not come back here, but I strongly suspect they'll be asking for help when the next problem gets assigned to them, and it's the same concept but with different numbers. I guess it's not my problem, though.

#### Bronn

##### Junior Member
Ill have a shot. since OP bailed its some practice for me.

if x = tank 1 and y = tank 2

first equation is x=y

second is

x+3000 = 6(y-3000)
x+3000 = 6y - 18000
x= 6y-21000

insert into first equation

6y-21000 = y
5y = 21000
y = 4200

x and y are both 4200 litres

double check by putting 4200 into equation 2

4200+3000=6(4200-3000)
7200 = 7200

not sure if that was the most efficient way or not.

Last edited:

#### ksdhart2

##### Senior Member
Not sure if that was the most efficient way or not.