exam Maths Puzzle Numerical Ability

. How many pints of a 9% cleaning solution must be mixed with 10 pints of a 13%
cleaning solution to give a 11% solution?

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exam Other Question

The volume of a sphere is a function of the radius of the sphere. Write a function for the volume of a ball. Evaluate the function for a volleyball of radius 10.5. Solve the following system of linear inequalities by graphing

3x-y<2
x+y>2

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