Lara can bake 5 x 6 = <<5*6=30>>30 cookies in one tray.

So, Lara is baking a total of 30 x 4 = <<30*4=120>>120 cookies.

# Answer

120
Question:
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?
Answer:
Let's think step by step.

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120
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?
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