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10 Dec 2020, 05:30
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
71% (02:30) correct
29%
(02:59)
wrong
based on 486
sessions
History
Date
Time
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Not Attempted Yet
Two vessels A and B contain spirit and water mixed in the ratio 5:2 and 7:6 respectively. Find the ratio in which these mixture be mixed to obtain a new mixture in vessel c containing spirit and water in the ratio 8:5?
A. 1 : 7
B. 2 : 9
C. 3 : 8
D. 7 : 9
E. 8 : 9
A. 1 : 7
B. 2 : 9
C. 3 : 8
D. 7 : 9
E. 8 : 9
10 Dec 2020, 07:52
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IMO D
=> 5/7 (X) + 7/13 (Y) = 8/13 ( X+Y)
Solving for X/Y , we get 7/9
=> 5/7 (X) + 7/13 (Y) = 8/13 ( X+Y)
Solving for X/Y , we get 7/9
15 Dec 2020, 03:57
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SOLUTION :
Spirit in 1 litre mix of X= 5/7 lit
Spirit in 1 litre mix of Y= 7/13 lit
Spirit in 1 litre mix ofZ= 8/13 lit
Using Alligation:
A : B
5/7 7/13
8/13
1/13 : 9/91
= 7 : 9 (OPTION D)
Hope this helps
Miss Devmitra Sen (Math)
Spirit in 1 litre mix of X= 5/7 lit
Spirit in 1 litre mix of Y= 7/13 lit
Spirit in 1 litre mix ofZ= 8/13 lit
Using Alligation:
A : B
5/7 7/13
8/13
1/13 : 9/91
= 7 : 9 (OPTION D)
Hope this helps
Miss Devmitra Sen (Math)
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