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Bill is four times as old as Lily. Two years from now, Bill will be nine times as old as Lily was two years ago. Find their present ages.

Solution

Bill is four times as old as Lily. Two years from now, Bill will be nine times as old as Lily was two years ago. Find their present ages.

Solution

Lily^{'} s age is : 4

Bill^{'} s age is : 16

Solution steps

Translate the problem into an equation:

4 x + 2 = 9 (x - 2)

Solve for

x, 4 x + 2 = 9 (x - 2) : x = 4

Find age

Lily^{'} s age is : 4

Bill^{'} s age is : 16

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