exam Maths Puzzle Numerical Ability

15 is 20% of what number

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exam Other Question

Prove that if 2 medians of a triangle are congruent then the triangle is isosceles A mat in a frame has an opening for a photograph a=3. Find the are of the mat if the area of the opening is given by A=pie times ab. a=3. b=4x-2. Leave your answer in terms of pie