book Maths Puzzle Numerical Ability

3. Candy and Tim share a paper route. It takes Candy 70 minutes to deliver all the papers, whereas Tim takes 80 minutes. How long does it take them when they work together?

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A collection of Quarters, Nickels, dimes and pennies are on a acounter.
The avergae value of the coins on the counter is 20 cents. If a another Quarte Two mathematicains were out for a walk. In answering the question of how many children she had, one of the mathematicians replied that she had 3 children and the product of their