exam Maths Puzzle Numerical Ability

swiming pool contains 14000 gallons of water, how many gallons of chlorine do you need to add to get a 33 percent mixture?

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exam Other Question

Find an equation in slope-intercept form passing through the points (7.2,3.8) and (9.1,9.1). the sum of the squares of two consecutive even integers is 452. find the numbers.