Jill has 21 red roses and 28 white roses. She wants to make arrangements of flowers that look exactly the same

Question

Jill has 21 red roses and 28 white roses. She wants to make arrangements of flowers that look exactly the same, with the same number of red roses and the same number of white roses in each arrangement. What is the greatest number of arrangements can she make?

GPT-5 mini · Answer

The greatest number is the greatest common divisor of 21 and 28, which is 7.  
So she can make 7 identical arrangements, each containing 21/7 = 3 red and 28/7 = 4 white roses.

Jill has 21 red roses and 28 white roses. She wants to make arrangements of flowers that look exactly the same, with the same number of red roses and the same number of white roses in each arrangement. What is the greatest number of arrangements can she make?

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