I can't really help you with the math but I can give you the formulas for the answers.
Mr. Fraser bought new shingles for his house for $3,500 using a credit card. His card has an interest rate of 17%. If he does no
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Answer:
4 rolls of blue ribbon,
5 rolls of silver ribbon,
3 rolls of yellow ribbon.
Step-by-step explanation:
We have been given that Mrs Grey is buying decorative ribbon of three different colors: blue, silver, and yellow. Blue ribbon is sold in rolls of 15 meters, silver is sold in rolls of 12 meters, and yellow comes in rolls of 20 meters.
As Mrs. Grey needs to have same length of each ribbon, so we will find the least common multiple of 15, 12 and 20.
Multiples of 15 are: 15, 30, 45, 60, 75, 90,...
Multiples of 12 are: 12, 24, 36, 48, 60, 72, 84,...
Multiples of 20 are: 20, 40, 60, 80,100,...
We can see that 60 is the least common multiple of 15, 12 and 20.
Therefore, Mrs. Grey should buy 4 rolls of blue ribbon.
Therefore, Mrs. Grey should buy 5 rolls of silver ribbon.
Therefore, Mrs. Grey should buy 3 rolls of yellow ribbon.