Answer: The answer is 180 degrees
Answer: H
Step-by-step explanation:
7% of 21 is 1.47
Answer:
2/5 okkkkkkkkkkkkkkkkkkkkk
Answer:
<em>Worker B needs 9 days to finish the rest of the work</em>
Step-by-step explanation:
<u>Proportions</u>
Worker A finishes a project on his own in 12 days and worker B does the same in 16 days.
Worker A does 1/12 of the project in one day and worker B does 1/16 of the project in one day. When working together, they do
![\frac{1}{12}+\frac{1}{16}=\frac{7}{48}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B12%7D%2B%5Cfrac%7B1%7D%7B16%7D%3D%5Cfrac%7B7%7D%7B48%7D)
After 3 days they have completed:
![3*\frac{7}{48}=\frac{7}{16}](https://tex.z-dn.net/?f=3%2A%5Cfrac%7B7%7D%7B48%7D%3D%5Cfrac%7B7%7D%7B16%7D)
parts of the project, this means it still remains:
![1-\frac{7}{16}=\frac{9}{16}](https://tex.z-dn.net/?f=1-%5Cfrac%7B7%7D%7B16%7D%3D%5Cfrac%7B9%7D%7B16%7D)
parts of the project and it is done by B alone. Since B does
per day, he now takes
![\displaystyle \frac{\frac{9}{16}}{\frac{1}{16}}=9](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7B%5Cfrac%7B9%7D%7B16%7D%7D%7B%5Cfrac%7B1%7D%7B16%7D%7D%3D9)
days to complete the project.
Worker B needs 9 days to finish the rest of the work