exam Maths Puzzle Numerical Ability

One brine solution contains 6% salt and another brine solution contains 2% salt. How many pints of each solution should be mixed to produce 48 pints of brine solution that is 5% salt?

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I'm stuck from the start on the following problem, as I can't seem to get started with the data provided.
Star Financial Corp offers short-term loans as shown in the accompanyin 3
-x -7=5(-x+1)
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