exam Maths Puzzle Numerical Ability

sally can paint house in 4 hrs and john in 6 hrs, how long together?

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Instructions: Find one factor for each polynomial.

What is the solution for -18x^3+72x Sam found a number of nickels, dimes, and quarters in his room. He found three more dimes than nickels but twice as many quarters as dimes. The total value of the coins was $5.05. How many coins of each type did Sam find?