Well 2 ma g a z in es 12 d o ll a rs is $6 per magazine and 6 is a multiple of 3, so that's a possibility.
You can divide 12 by 2, and you'll get 6. 6 is also a multiple of 3. So $6 is the price of each magazine.
Hope it helped!
Ken bought two magazines for $12, so each magazine costs $6 or $3, both being multiples of $3. However, only the price $6 fits as he purchased exactly 2 magazines. Thus, the valid prices are $3 and $6, but $6 fits the transaction exactly.
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