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Andrew is 138 years old .erica is 21 years old . how many years until Andrew age is 4 times erica age

Solution

Andrew is 138 years old .erica is 21 years old . how many years until Andrew age is 4 times erica age

Solution

Number of years from now : 18

Solution steps

Translate the problem into an equation:

4 (21 + x) = 138 + x

Solve for

x, 4 (21 + x) = 138 + x : x = 18

Number of years from now : 18

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