Latest Bank Exam Aptitude Question SOLUTION: -Adrian and Betty have been teaching for a total of 36 years. -Charlie and Betty have been teaching for a total of 22 years. -Charlie and Adrian have been teaching for a total of

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(#M40152437) BANK EXAM Logical Reasoning question Time Keep an EYE

-Adrian and Betty have been teaching for a total of 36 years.

-Charlie and Betty have been teaching for a total of 22 years.

-Charlie and Adrian have been teaching for a total of 28 years.

How long has each been teaching?


OPTIONS
1)20
2)21
3)22
4)23
4)24
5)25
6)26
7)27
8)28
9)29
10)None

Asked In Bank Exam SHAKE MAHAMAD GOUSE (9 years ago)

Unsolved Read Solution (4)

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abhishek raj  (9 years ago)

adrian and betty together teaches for 36 yrs...(adrian+betty=36)--------eq 1
betty and charlie together teaches for 22 yrs...(betty+charlie=22)-------eq2
charlie and adrian together teaches for 28 yrs...(charlie+adrian=28)-----eq3
now addind equation 1,2,3...we get....
2(adrian+beety+charlie)=86
now,(adrian+betty+charlie)=43--------eq 4
again,subtracting eq 1,2 and 3 respectively from eq 4....we get charlie=7,adrian=21 and betty=15

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sabyasachi chandra  (9 years ago)

adrian and betty together teaches for 36 yrs...(adrian+betty=36)--------eq 1
betty and charlie together teaches for 22 yrs...(betty+charlie=22)-------eq2
charlie and adrian together teaches for 28 yrs...(charlie+adrian=28)-----eq3
now addind equation 1,2,3...we get....
2(adrian+beety+charlie)=86
now,(adrian+betty+charlie)=43--------eq 4
again,subtracting eq 1,2 and 3 respectively from eq 4....we get charlie=7,adrian=21 and betty=15
Read more at http://www.m4maths.com/frequently-asked-placement-questions.php?SOURCE=Bank%20Exam#UxFUUZahhQbmjtRc.99

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Purba Biswas  (9 years ago)

Adrian=A
Betty=B
Charlie= C

A+B=36
C+B=22
A+C=28
C=22-B
SOLVING THESE 3 equations with substitution we get A=21 B=12
C=4... only 21 z present!

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shesharaupally jyothi  (9 years ago)

Adrain=21,Betty=15,Charlie=7..

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