Lara is baking cookies using four baking trays. She places five rows of cookies on a baking tray where there are six cookies in one row. How many cookies is she baking? Give me reasons, before answering the question
Lara can bake 5 x 6 = 30 cookies in one tray. So, Lara is baking a total of 30 x 4 = 120 cookies. So the final answer is 120.