Ellen is baking bread. It takes 3 hours to rise 1 ball of dough, and then another 2 hours to bake it. If she makes 4 balls of dough one after another and then bakes them one after another when they're done rising, how many hours will it take?
Ellen takes 4*3=
<gadget id="calculator">4*3</gadget>
<output>12</output>
12 hours in total to rise all balls of dough.
It will take 4*2=
<gadget id="calculator">4*2</gadget>
<output>8</output>
8 more hours to bake each one.
It will take her 12+8=
<gadget id="calculator">12+8</gadget>
<output>20</output>
20 hours to make all of the bread.

<result>20</result>