exam Maths Puzzle Numerical Ability

Add or subtract. Assume all variables represent positive real numbers

/3x^2 - 3/48x^2 - 2/48x^2 (radical equations)

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exam Other Question

62.5(1.0038)^t=76.5(1.003)^t

I just asked this quiestions a minute ago, but I sent the wrong email address. HHere it is again w/ the right email. sorry and thanks. cathy I have a cylinder 48" tall & 30" in diameter. How many gallons will it hold?