Question and Answers Forum

All Questions      Topic List

None Questions

Previous in All Question      Next in All Question      

Previous in None      Next in None      

Question Number 104460 by Anindita last updated on 21/Jul/20

The number of reading books is 1248  in a library. The number of story  books is 936. The librarians bought  more reading books. Now ((The number of Reading books)/(The number of story books ))  = ((11)/5). How many reading books were  bought ?

$$\mathrm{The}\:\mathrm{number}\:\mathrm{of}\:\mathrm{reading}\:\mathrm{books}\:\mathrm{is}\:\mathrm{1248} \\ $$$$\mathrm{in}\:\mathrm{a}\:\mathrm{library}.\:\mathrm{The}\:\mathrm{number}\:\mathrm{of}\:\mathrm{story} \\ $$$$\mathrm{books}\:\mathrm{is}\:\mathrm{936}.\:\mathrm{The}\:\mathrm{librarians}\:\mathrm{bought} \\ $$$$\mathrm{more}\:\mathrm{reading}\:\mathrm{books}.\:\mathrm{Now}\:\frac{\mathrm{The}\:\mathrm{number}\:\mathrm{of}\:\mathrm{Reading}\:\mathrm{books}}{\mathrm{The}\:\mathrm{number}\:\mathrm{of}\:\mathrm{story}\:\mathrm{books}\:} \\ $$$$=\:\frac{\mathrm{11}}{\mathrm{5}}.\:\mathrm{How}\:\mathrm{many}\:\mathrm{reading}\:\mathrm{books}\:\mathrm{were} \\ $$$$\mathrm{bought}\:? \\ $$

Answered by Ritu Jain last updated on 21/Jul/20

((1248+x)/(936))=(3/4)  4(1248+x)=3×936  4992+4x=2808  4x=−2184  x=−546  So your question is wrong  If ratio is (4/3) then books bought is 0.

$$\frac{\mathrm{1248}+{x}}{\mathrm{936}}=\frac{\mathrm{3}}{\mathrm{4}} \\ $$$$\mathrm{4}\left(\mathrm{1248}+{x}\right)=\mathrm{3}×\mathrm{936} \\ $$$$\mathrm{4992}+\mathrm{4}{x}=\mathrm{2808} \\ $$$$\mathrm{4}{x}=−\mathrm{2184} \\ $$$${x}=−\mathrm{546} \\ $$$$\mathrm{So}\:\mathrm{your}\:\mathrm{question}\:\mathrm{is}\:\mathrm{wrong} \\ $$$$\mathrm{If}\:\mathrm{ratio}\:\mathrm{is}\:\frac{\mathrm{4}}{\mathrm{3}}\:\mathrm{then}\:\mathrm{books}\:\mathrm{bought}\:\mathrm{is}\:\mathrm{0}. \\ $$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com