Question

There are in total $k$ number of chapters to be covered for a student. In $1$ week, the student covers $d$ chapters. Then, in terms of $k$ and $d$, find the percentage of chapters completed.

• A. $\frac{100d}{k}$%
• B. $\frac{k}{100d}$%
• C. $\frac{100k}{d}$%
• D. $\frac{100(k-d)}{k}$%

Answer 1

The correct option is A $\frac{100d}{k}$%

The total number of chapters is $k$. The number of chapters covered is d. Hence the fraction of chapters covered is $\frac{d}{k}$. Thus the percentage of chapters covered is $=100\times \frac{d}{k}=\frac{100d}{k}$.