exam Maths Puzzle Numerical Ability

PROPERTY STEPS FOR PROBLEM 40. 4(16DIVIDE BY 4 TO THE POWER OF 2)

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How much 18% acid solution must be mixed with 38% acid solution to create 75 oz of 25% acid solution?

Using variables x & y, write two equations. This is actually a total value problem using a graph. How many lbs. of whole milk and cream should be mixed to form 200lbs for cream cheese. whole milk= 4% milk fat, milk for cream cheese = 8 % milk fat and cream =30% milk fat.