7. mrs. cross is sewing dresses. she has 18 pink buttons and 20 purple buttons. each dress will have the…
7. mrs. cross is sewing dresses. she has 18 pink buttons and 20 purple buttons. each dress will have the same number of pink and purple buttons. using all the buttons, what is the greatest number of dresses mrs. cross can sew?
Answer
Explanation:
Step1: Find the GCD of 18 and 20
We need to find the greatest - common divisor (GCD) of 18 and 20 since each dress has the same number of pink and purple buttons and we want to use all the buttons. 18 = 2×3×3 20 = 2×2×5
Step2: Determine the GCD value
The common factor of 18 and 20 is 2. So, the GCD(18, 20)=2.
Answer:
2