Question 1003526
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"When I was at your age now, you were only 5 years old. When you become as old as I am now, I will be 71 years old." 
How old are A and B now, respectively?
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Let me re-formulate to get the solution more easily.

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When A was at the age of B now, B was only 5 years old. When B become as old as A is now, A will be 71 years old. 
How old are A and B now, respectively?
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Let x be the preset age of A and y be the present age of B.

When A was at the age of B now? - It was x-y years ago. 
What was the age of B at that time, x-y years ago? The age of B was y - (x-y) = 2y-x. 

It gives you the first equation

2y - x = 5.

When B become as old as A is now? - It will happen after x-y years.
What will be the age of A at that time? - The age of A at that time will be x + (x-y) = 2x - y. 

It gives you the second equation

2x - y = 71.

Now solve this system

2y - x = 5,
2x - y = 71.

Do it yourself please. It is easy.

<U>Answer</U>. A is 49 years now. The present age of B is 27 years.
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