A library has 1000 books in stick.they were biographies ,fictions and academic books.the ratio of biographies to fictions to academic books is 4:7:9 the library adds 25 biographies,50 fictons and 100 academic books to the library during academic year. What is the new ratio of biographies to fictions to the academics books?
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Step-by-step explanation:
no of biographies books earlier:-4/20*1000=200
no. of fiction book earlier:-7/20*1000=350
no.of academic books earlier:-9/20*1000=450
total biography books after addup:-200+25=225
total fiction books after addup:-350+50=400
total academic books after addup:-450+100=550
Answer :- 9:16:22
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