Question

answer Q4 fast very fast

Answer 1

Answer:

Step-by-step explanation:

book read in 1 hour = 1/3

book read in 21/5hour=1/3*21/5

=21/15 part of book

Answer 2

Answer:

part of books readed by ravish in 2 hour=1/3

there for part of book readed by ravish in 2 1/5 hr = first we will convert b2 1/5 into improper fraction 2×5+1= 11hr

part of book readed by him in 11 hr = 1/3 ×11=