Answer:
![(1)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/jc94jmo47edo24idc55vdg5ienelpjfx1f.png)
Explanation:
Let x denotes the total number of pages in Jack's book , then we have
Then, the fraction of book he studies on Monday =
![(x)/(6)](https://img.qammunity.org/2020/formulas/mathematics/high-school/mb976tw7e8bmvc2ba06fs2vaz57qewsxpj.png)
Fraction of book he studies on Tuesday =
![(x)/(3)](https://img.qammunity.org/2020/formulas/mathematics/high-school/4s951tmrv78pbixpsmoqwyg4ssbmggu8mj.png)
The remaining pages of book he studied in 4 days =
![x-(x)/(6)-(x)/(3)](https://img.qammunity.org/2020/formulas/mathematics/high-school/z57rcn6gt6thyptu0fsydqyq5th9g7ch3r.png)
Simplify using LCM, we get
![(6x-x-2x)/(6)=(3x)/(6)=(x)/(2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/jk6jsjh773z4rk6ggpaeytd4zntp82o8a2.png)
i.e. The remaining pages of book he studied in 4 days =
![(x)/(2)](https://img.qammunity.org/2020/formulas/mathematics/college/syztitbd2ci2o7q1pb4nz12l0l4mnyib9p.png)
i.e. Fraction of the book he read on 4 days =
![(1)/(2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/g8uu853hd4xgpf51yzryheaugm47qujkf6.png)
Then, the fraction of the book he read on each of the 4 days =
![(1)/(2)/ 4](https://img.qammunity.org/2020/formulas/mathematics/high-school/uj1pbm44ckhvtu6m84z9lqkvyzmepdg3l0.png)
![=(1)/(2*4)=(1)/(8)](https://img.qammunity.org/2020/formulas/mathematics/high-school/zs2v5xa1pgili5d2okmq045at2td041bkd.png)
Hence, Fraction of the book he read on each of the 4 days =
![(1)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/jc94jmo47edo24idc55vdg5ienelpjfx1f.png)