Math Trick : Finding someone's age

This is the Math Trick to find someone's age! Try it on someone, It always works!
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Ask the person to multiply the first number of his or her age by 5.

Tell them to add 3.

Now tell them to double this figure.

Finally, have the person add the second number of his or her age to the figure and ave them tell you their answer.

Deduct (Subtract) 6 and you will have their age.