Question

Fireside Flowers has 75 daisies, 60 lilies, and 30 roses. What is the greatest common factor Fireside Flowers can use to divide the flowers into equal groups?
A.
5
B.
15
C.
20
D.
6

Answer 1

Find the greatest common factor of 75, 60, and 30.

Prime factors:
- 75 = 3 × 5^2
- 60 = 2^2 × 3 × 5
- 30 = 2 × 3 × 5

Common factors: 3 and 5 → 3 × 5 = 15.

So the greatest common factor is 15. Answer: B.