Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Joe had 200 data points on his dataset. He then added 20% more data points to the dataset. If he reduced the data points by 1/4 of the total data points, calculate the total number of data points the dataset contains.

### Response:
 Wakati Joe aliongeza data points 20% zaidi kwenye seti ya data, data points kwenye seti ya data ziliongezeka kwa 20/100*200=40 data points.
Jumla ya data points iliongezeka hadi 200+40= <<200+40=240>>240
Ikiwa alipunguza data points kwa 1/4 ya jumla ya data points, data points zilipungua kwa 1/4*240=<<240*1/4=60>>60
Jumla ya data points zilizobaki kwenye seti ya data baada ya Joe kupunguza data points kwa 1/4 ya jumla ya data points ni 240-60= <<240-60=180>>180