Answer:
3:13:8
Step-by-step explanation:
Divide each number by the highest common factor, which is 5 in this case.
Your answer is: $3.15 each.
Here are the steps:
First, I added $2.82 and $1.43. Then, I subtracted the sum ($4.25) from $20. Lastly, I divided the difference($15.75) by five because there were five pineapples. Which gave me the answer: $3.15.
The frequency stays the same and the wavelength decreases.
I think it is - 22
i hope this helps:)