1,17
The GCF is 5.
The GCF of 20, 55, and 85 is 5 One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors of 55 are 1, 5, 11, and 55. The factors of 85 are 1, 5, 17, and 85. The common factors are 1 and 5. Therefore, the greatest common factor is 5. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 20 are 2, 2, and 5. The prime factors of 55 are 5 and 11. The prime factors of 85 are 5 and 17. The prime factors in common are a single 5, so the greatest common factor is 5.
5
The factors of 20 are: 1, 2, 4, 5, 10, 20 The factors of 55 are: 1, 5, 11, 55 The factors of 65 are: 1, 5, 13, 65
Factors of 17= 17x1 Factors of 20=2x2x5 Factors of 85=17x5 Lcm=17x5x2x2 LCM=340
Factors of 45: 1, 3, 5, 9, 15, 45.Factors of 55: 1, 5, 11, 55.Factors of 20: 1, 2, 4, 5, 10, 20.GCF (45, 55, 20) = 5
85 has four factors.
55% of 85= 55% * 85= 0.55 * 85= 46.75
The GCF is: 5
The sum of 85 and 55 is 140.
5
The simplest equivalent fraction is 4/11 (four elevenths). --- Finding the common factors: What can you divide 20 and 55 both by? The factors for 20 are 1, 2, 4, 5, 10, 20 The factors for 55 are 1, 5, 11, 55 We notice both have the number 5, so let's use 5. 20/5 = 4 55/5 = 11 So, the simplest form for 20/55 is 4/11.