The GCF is 180.
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LCM of 90 and 108 is 540 The LCM is the product divided by the GCF 90 factors into [2 3 3 5] 108 factors to [2 2 3 3 3] common factors are [2 3 3] so GCF=18 90 * 108 / 18 = 540
The GCF of 240, 360, and 540 isThe prime factorization of 240 is 2*2*2*2*3*5The prime factorization of 360 is 2*2*2*3*3*5The prime factorization of 540 is 2*2*3*3*3*5The GCF is 2*2*3*5 = 60To check your work:240 = 60 * 4360 = 60 * 6540 = 60 * 9Since 4, 6, and 9 have a GCF of 1, we know the answer is correct.
2520
2520
28% of 540= 28% * 540= 0.28 * 540= 151.2