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2014 AMC 10AProblem 1P1-10~1 minPrint
Fractions & DecimalsSet up the equation/formula and compute; no special trick needed

What is 10⋅(12+15+110)−1?10 \cdot \left(\tfrac{1}{2} + \tfrac{1}{5} + \tfrac{1}{10}\right)^{-1}?

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Problem © Mathematical Association of America (MAA), American Mathematics Competitions. Reproduced for non-commercial educational use. Solution and commentary are original to this site.