Question

Rabi reads 1 3/4 part of a book in 1 hour How much part of the book will he read in 2 1/5 hours

Answer 1

please refer to the attachment


Hope it will help you

Answer 2

Here is the answer of your question

In 1 hour Rabi reads the part of the book =13/4

In 21/5 hours Rabi will read part of the book=(13/4)×21/5

=273/20 part of the book.
Hence,Rabi will read 273/20 part of the book in 21/5 hrs.