How old are Mike and John?

algebraWhat

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Mikes age is 3 times John's age. In 12 years, Mike will be twice as old as John. How old are Mike and John?

Trying to write the correct equation... :confused:

So, M=3J Then M+12 = 2J

but doesn't there have to be a +12 on the J side? I'm missing a step.
 

Subhotosh Khan

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Mikes age is 3 times John's age. In 12 years, Mike will be twice as old as John. How old are Mike and John?

Trying to write the correct equation... :confused:

So, M=3J Then M+12 = 2J

but doesn't there have to be a +12 on the J side? I'm missing a step.
You are correct - if you meant:

M + 12 = 2 * (J + 12)

By the way you need to add in the begining:

Let

Mike's age now = M

John's age now = J
 
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