exam Maths Puzzle Numerical Ability

PLEASE SOMEONE HELP ME?
Business and finance. Kevin earned $165 interest for 1 year on an investment of
$1500. At the same rate, what amount of interest would be earned by an investment of $2500?

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exam Other Question

fine all solutions of the equation in the interval [0, 2π) algebraically.

(sec^2(x)) + tanx = 3 Please help me solve this word problem.
The hypotenuse of a given right triangle is 6 cm longer than the
shorter leg. The length of the shorter leg is 2 cm less than that of the longer leg. Find the lengths of the three sides.

Thank you