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Xiaoming is making cookies. Each batch of cookies uses 3 eggs. If Xiaoming has 20 eggs, and assuming he has enough of the other ingredients to make the cookies, what is the greatest number of batches that he can make?

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Question:

A
6

explanation

If Xiaoming has 20 eggs, and each batch of cookies uses 3 eggs, the number of batches can be found by dividing 20 by 3. This does not divide evenly, so the number should be rounded down to 6 because Xiaoming does not have enough eggs to make 7 (3 × 3 eggs) batches (7 × 3 = 21).

3 is incorrect because 3 batches would use only 9 eggs . This means that Xiaoming would have 11 eggs left, which is enough to make more batches. 7 is incorrect because 7 batches would use 21 eggs (3 × 7 = 21), but Xiaoming has only 20 eggs. 17 is incorrect because 17 batches would use 51 eggs (17 × 3 = 51), but Xiaoming has only 20 eggs.

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