exam Maths Puzzle Numerical Ability

Solve 50q-43=52q-81.
What percent of 74 is 481?

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exam Other Question

If grade A coffee costs .95 cents a pound and grade b coffee costs .75 cents a pound, how many pounds of each grade is needed if the total cost is $50.50, and the amount of grade b that is needed is twice the amount needed for grad A plus 5 pounds? If f(x)=a(x-2)2 +3, is the function whose graph contains the point (4,9), find a. I answered 4/9. Is that correct? Please work so I can see. Thanks