Farmer Giles has a field 45 m x 60 m. He wishes to divide it into square yards of equal size. What is the biggest size the yards could be?

Question

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Answer 1

I agree with the comment.  I'm assuming they mean sections, using yards can be confusing

 

At any rate, if we mean sections:

Factors of 45:1,3,5,9,15,45

Factors of 60:1,2,3,4,5,6,10,12,15,20,30,60

 

Greatest common factor is 15

 

So you can divide the field into sections of 3x15 and 4x15.  The biggest size of the yards would be 15*15 or 225 m²