answer Q4 fast very fast
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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
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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=
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