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six years ago mark was four times as old as billy. In 4 years mark will be twice as old as billy how old are they now

Solution

six years ago mark was four times as old as billy. In 4 years mark will be twice as old as billy how old are they now

Solution

Mark^{'} s age is : 26

Billy^{'} s age is : 11

Solution steps

Translate the problem into an equation:

x - 6 = 4 (y - 6), x + 4 = 2 (y + 4)

x - 6 = 4 (y - 6), x + 4 = 2 (y + 4) : x = 26, y = 11

Mark^{'} s age is : 26

Billy^{'} s age is : 11

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