# Thread: Chemistry concentration question help!

1. ## Chemistry concentration question help!

I have 230grams of solution and 150grams per litre. How much of each would I need to make 2 litres of 200grams per litre.

How do I solve this problem please help!

2. ## Re: Chemistry concentration question help!

Originally Posted by OMg
I have 230grams of solution and 150grams per litre. How much of each would I need to make 2 litres of 200grams per litre.

How do I solve this problem please help!
let $x$ be the amount of the 230 g/l solution and $y$ be the amount of 150 g/l solution, both in litres

$x+y=2$

$230 x + 150 y = 2 \cdot 200$

can you solve that?