D alone can complete half of a work in 100 days. In 47 days what percentage of the work will be completed by D?

Correct option is A

Given: D completes half work in 100 days.
Formula Used:
Percentage of work completed =$$\frac{\text{Work Done}}{\text{Total Work}} \times 100$$​​
Solution:
If D completes half work in 100 days, then whole work completed by D in 200 days
Percentage of work completed =$$\frac{47}{200} \times 100 = 23.5$$%​