exam Maths Puzzle Numerical Ability

If y varies inversely as x^2, and y=2 when x=4, what is the constant of variation?

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exam Other Question

Grain worth 65 cents per pound was mixed with grain worth 90 cents per pound to produce 20 pounds of a mixture worth 80 cents per pound. Find how many pounds of each was used state the number to replace ? a + 3a= 1a = 3a = (1 + ?) a

Distributive property

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