Step-by-step explanation:
The prime numbers 5 and 3 are both factors that are common to 30 and 75. The product of these factors is 3×5 = 15. Thus, the “Greatest Common Factor” of 30 and 75 is 15.
You problem is missing some varibles
10%=1/10
10%*2=20%
1/10 OF 30=3
2/10 of 30=6=20%
6+30=36
the total amount payed is $36
Answer: $20
Explanation: She needs to buy 40 more necklaces because 49-9=40. Since the necklaces are priced at 2 for 1 dollar you would dived the number of necklaces she needs by 2 so 40/2=20, 20 dollars
