in a library 20 books are in hindi 50 of..., Percentage, General Mathematics

Question:In a library, `20%` books are in Hindi,` 50%` of the remaining are in English and the remaining `9000` are in various other languages. What is the total number of books in  English ?

A `4000` 
B `3000` 
C `2250` 
D None of these

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+ AnswerD

+ ExplanationHindi Books 

`= 20% of x = 20/(100) x = x/5`

Remaining `= (x - x/5)`

`= (4x)/5`

English Books `= 50% of (4x)/5`

`= 50/100 xx (4x)/5`

`= (2x)/5`

Remaining `= ((4x)/5 - (2x)/(5))`

`= (2x)/5`

`:. (2x)/5 = 9000 or x`

`= (9000 xx 5)/2`

`= 22500`

+ Report

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