Rafiq exercised for of an hour, while Rohit exercised for of an hour. Who exercised for a longer time?

It is given in the question that,

Rafiq exercised book for of an hour

Also,

Rohit exercised book for of an hour

Now, to convert these fractions into like fractions:

× =

Also,

× =

Therefore,

>

Hence,

Rohit exercised for a longer time.