100+4200 is 4,300
4,300+50 is 4,350 if you rounded that to the nearest 10,000 it's 10,000
Explain cause I think you're missing something from the question
Answer:
![\frac{17}{80}](https://tex.z-dn.net/?f=%5Cfrac%7B17%7D%7B80%7D)
Step-by-step explanation:
we have
![21\frac{1}{4}\%](https://tex.z-dn.net/?f=21%5Cfrac%7B1%7D%7B4%7D%5C%25)
Convert mixed number to an improper fraction
![21\frac{1}{4}=21+\frac{1}{4}=\frac{21*4+1}{4}=\frac{85}{4}](https://tex.z-dn.net/?f=21%5Cfrac%7B1%7D%7B4%7D%3D21%2B%5Cfrac%7B1%7D%7B4%7D%3D%5Cfrac%7B21%2A4%2B1%7D%7B4%7D%3D%5Cfrac%7B85%7D%7B4%7D)
so
![21\frac{1}{4}\%=\frac{85}{4}\%](https://tex.z-dn.net/?f=21%5Cfrac%7B1%7D%7B4%7D%5C%25%3D%5Cfrac%7B85%7D%7B4%7D%5C%25)
Convert percent number as a fraction
![\frac{85}{4}\%=\frac{85}{4}:100=\frac{85}{4*100}=\frac{85}{400}](https://tex.z-dn.net/?f=%5Cfrac%7B85%7D%7B4%7D%5C%25%3D%5Cfrac%7B85%7D%7B4%7D%3A100%3D%5Cfrac%7B85%7D%7B4%2A100%7D%3D%5Cfrac%7B85%7D%7B400%7D)
Simplify
Divide by 5 both numerator and denominator
![\frac{17}{80}](https://tex.z-dn.net/?f=%5Cfrac%7B17%7D%7B80%7D)