book Maths Puzzle Numerical Ability

Mrs. Windell spent 1 h addressing one-third of the family Christmas cards, and Mr. Windell spent 1 1/4 h addressing another third. Continuing the addressing together, how long did

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book Other Question
Find the value(s) of w so that the points (0,3) and (6,w) are 10 units apart. How do you figure out that a angle is supplementary?