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26 Apr 2022, 03:30
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
80% (02:12) correct
20%
(02:23)
wrong
based on 65
sessions
History
Date
Time
Result
Not Attempted Yet
21 binders can bind 1400 books in 15 days. How many binders will be required to bind 800 books in 20 days?
(A) 7
(B) 9
(C) 12
(D) 14
(E) None of these
(A) 7
(B) 9
(C) 12
(D) 14
(E) None of these
15 May 2022, 08:46
Kudos
Bookmarks
Bunuel
21 binders can bind 1400 books in 15 days
Rate for 21 binders = 1400/15
Rate for 1 binder = 1400/(15*21) = 40/9
No. of binders required to bind 800 books in 20 days = Total work/ Rate per binder * Time
= 800/ (20*40/9) = 9
Option B
