Mr. Adams is 33 and Mr. Spicer is 27. How many years ago was Mr. Adams twice as old as Mr. Spicer ?

We can set up an equation, where x = the number of years ago.

33 - x = 2(27-x) <-- When is 33 - x (Mr. Adam's age) equal to 2 times 27 - x (Mr. Spicer's age)

33 - x = 54 - 2x <-- Distribute the 2

x = 21 <-- combine like terms

Now, check it.

33 - 21 = 12

2*(27-21) = 2(6) = 12

12 years ago, Mr. Adams was twice as old as Mr. Spicer.

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