In a library, 20% of the books are in Hindi, 50% of the remaining are in English and the remaining 9000 are in regional languages. What is the total number of books? एक पुस्तकालय में, 20% पुस्तकें हिंदी में हैं, शेष का 50% अंग्रेजी में हैं और शेष 9000 क्षेत्रीय भाषाओं में हैं। कुल पुस्तकों की संख्या क्या है?
A
18,000 (18,000)
B
20,000 (20,000)
C
22,500 (22,500)
D
25,000 (25,000)
or press Space / Enter
Correct Answer 22,500
Explanation
Let total be x. Hindi = 0.20x. Remaining = 0.80x. English = 0.5 x 0.80x = 0.40x. Final remaining = 0.80x - 0.40x = 0.40x = 9000, x = 22,500.