exam Maths Puzzle Numerical Ability

i cannot convert this into a unit rate 100 meters ran in 12 seconds thank you for your time

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I need help please!. find the zeros of (2x-7)^2(x^2-9) and state the multiplicity of each. Thanks so much. 1).The area of the floor of the rectangle room shown is 175 square feet. The lenght of the room is 1 1/2 longer than the width. Find the lenght of the room?
Area = 175 square feet