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Cody is twice as old as Evan. Three years ago the sum of their ages was 27. Find the age of Evan three years ago.

Solution

Cody is twice as old as Evan. Three years ago the sum of their ages was 27. Find the age of Evan three years ago.

Solution

Eva n^{'} s age 3 years ago : 8

Solution steps

Translate the problem into an equation:

2 x - 3 + x - 3 = 27

Solve for

x, 2 x - 3 + x - 3 = 27 : x = 11

Find Evan's age 3 years ago:

8

Eva n^{'} s age 3 years ago : 8

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