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Maths Puzzle
Numerical Ability
Marie and Isabel can paint an apartment in 5hours working together. If Marie can do the same job alone in 7hours, how long will it take Isabel to finish it alone?
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book Other Question
Rewrite the following without an exponent:
(-2)^-2
How do you find an equation if all you know is m= -7/5 and the x intercept is 5?