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Mike is 10 years old and his sister is 2 years old. In how many years will Mike be twice as old as his sister?

Solution

Mike is 10 years old and his sister is 2 years old. In how many years will Mike be twice as old as his sister?

Solution

Number of years from now : 6

Solution steps

Translate the problem into an equation:

2 (2 + x) = 10 + x

Solve for

x, 2 (2 + x) = 10 + x : x = 6

Number of years from now : 6

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