exam Maths Puzzle Numerical Ability

matthew is 3 times as old as jenny. In 7 years he will be twice as old as she will be then. How old is each now?

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exam Other Question

(d^2-7d)/(14-2d) It is a crossword puzzle. The question is "To find the value of an algebraic expression by substituting a number for each variable and simplifying." The answer has 8 letters and the 4th letter is "L"