exam Maths Puzzle Numerical Ability

A man at ground level measures the angle of elevation to the top of a building to be 53 degrees. If at this point he is 12 feet from the building, what is the height of the buildi

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The problem says: Arianna took 2 h longer to drive 360 mi on the first day of a trip than she took to drive 270 mi on the second day. If her speed was the same on both days, what was the driving time each day?

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CH When you are working with Integers in Math, how do you solve Multiplication using like and unlike signs?