Answer:
hours
Explanation:
Given,
The total numbers of hours allotted = 4,
In first 2 hours,
Practice in first hour =
hour,
In second hour =
hour,
Remaining hours = 4 - 2 = 2 hours,
In remaining 2 hours,
Practice in first hour =
hour
Rest time =
hour
Remaining time or practice in second hour =
![2-(1)/(2)-(3)/(5)=(20-5-6)/(10)=(9)/(10)](https://img.qammunity.org/2020/formulas/mathematics/high-school/74f0r6k7rfudzxpvq4qwdr4rprpy13i6mz.png)
Total time of practicing =
![(5)/(8)+(2)/(3)+(3)/(5)+(9)/(10)](https://img.qammunity.org/2020/formulas/mathematics/high-school/rdygvvthp4oj0wa6tei14vrwf51dd85asj.png)
![=(75+80+72+108)/(120)](https://img.qammunity.org/2020/formulas/mathematics/high-school/ohtap1p1jucan4llrzbvd67dh55q7zolld.png)
![=(335)/(120)](https://img.qammunity.org/2020/formulas/mathematics/high-school/jvsompkykqzp04hxn8eofnxava651b54bo.png)
hours