exam Maths Puzzle Numerical Ability

A chemist has one solution that is 25% salt and 75% water, and another solution that is 10% salt. How many liters of each sould the chemist use to make 120 liters of a solution that is 15% salt?

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exam Other Question
Factor completely:
2x^2-50

Thanks for your help ! 12. Slope undefined; containing the point (-3, 4)
Write the equation using the general form or the slope-intercept form, whichever you prefer. Graph each line.