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John is 5 years older than Mary. In 10 years, twice John's age decreased by...

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John is 5 years older than Mary. In 10 years, twice John's age decreased by Mary's age Is 35, and John's age will be twice Mary's current age. Find their ages now.If x Is Mary's age now and yis John's age now, which system of equations could not be used to solve the problem?y=x+ 5 and 2(y + 10) = xy=x+ 5 and 2(y+10)-(x+10) = 35y=x+5 and y + 10 = 2x

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