# Math Help - Word Problem

1. ## Word Problem

One canned juice drink is 25% O.J, another is 10% O.J. How many liters of each should be mixed together in order to get 15L that is 21% O.J.?

2. Anyone? I really need help with this problem. It is the last question. Thank you.

3. Originally Posted by sh0rtys463
One canned juice drink is 25% O.J, another is 10% O.J. How many liters of each should be mixed together in order to get 15L that is 21% O.J.?
Mix together $x$ litres of J1, and $y$ litres of J2.

Then:

$
x+y=15\ \ \
$
(to give 15 litres of juice)

and

$
0.25\times x +0.1 \times y=0.21 \times 15\ \ \
$
(this is the amount of juice in the product)

Now your problem is to solve these simultaneous linear equations.

RonL