A baker decorates 42 cupcakes in 30 minutes. She decorates cupcakes at a constant rate.

Since the baker can bake 42 cupcakes in 30 minutes, and we need to find how many she can decorate in 1 min, we divide the 30 min by 30 to get 1 min, and divide 42 by 30 as well since it is a constant rate and we need to keep it proportional. 42/30 is 1.4, so she can decorate 1.4 cupcakes in 1 min. Hope this helps!