Kelly needs 9 more days to complete the entire book
Explanation:
Given:
Total number of pages Kelly has to read=1248 pages
Number of pages read in the past 5 days=384
To find:
The number of days Kelly needs to read the book?
Solution:
![\text {The rate at which kelly reads the pages}=\frac{\text { (Total no.of pages she has read) }}{\text { Total no.of days }}](https://img.qammunity.org/2020/formulas/mathematics/high-school/lc87bbn0j9b87eg2yubqcgyb6zoj0qmyn4.png)
Substituting the values we get,
![\begin{array}{l}{\text { The rate at which Kelly reads the pages }=\text { (Total no. of pages she has read) / Total no. of }} \\ {\text { days }}\end{array}](https://img.qammunity.org/2020/formulas/mathematics/high-school/8756bmyozlu556ifinpe6141e4t1xvh4f8.png)
![\text { The rate at which Kelly reads the pages }=(384)/(4)](https://img.qammunity.org/2020/formulas/mathematics/high-school/eeu8acgs3a5udobzg1xte7adbl22nomzq5.png)
The rate at which Kelly reads the pages=96 pages per day
![\text { The no. of days required }=\frac{\text { total pages }}{\text { rate of reading }}](https://img.qammunity.org/2020/formulas/mathematics/high-school/252jzdxlc6w0djqxnrlbduu30s5gzycd2k.png)
![\text { The no. of days required }=(864)/(96)](https://img.qammunity.org/2020/formulas/mathematics/high-school/sm8vo6xnl1emns9ad216rrt6xin01vw1sr.png)
The no. of days required = 9 days
Thus it takes 9 days to complete her book.