Use square bricks to pave the floor of a classroom. If you use square bricks with a side length of 4 decimeters, you need 500. If you use square bricks with a side length of 5 decimeters to pave, how many square bricks do you need

Use square bricks to pave the floor of a classroom. If you use square bricks with a side length of 4 decimeters, you need 500. If you use square bricks with a side length of 5 decimeters to pave, how many square bricks do you need

320 yuan
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