Hi Celena. Your answer looks good, however, the idea behind dimensional analysis is to keep track of the units a little more: $$\frac{12 \text{ m}}{1\text{ min}} = \frac{12 \text{ m}}{1\text{ min}}\times \frac{1 \text{ min}}{60\text{ sec}}\times \frac{100 \text{ cm}}{1\text{ m}} = \cdots$$ Then you can see the units canceling with each other when making the calculation.

Hope this helps, otherwise let us know if you have more questions.