Question
Amit and Francis are on detention and they need to write 65 pages together, Amit writing for an hour extra than Francis. Francis can write 2 pages/hour more than Amit and therefore, he did 5 pages more than Amit.What is the speed per hour of Francis? (pages/hr)
Answer: Option C
:
C
Option (c )
Total = 65 pages
Go from answer options
Option (a)→F=6
A= 4
Together 1024in one hour . This multiplied by (65-4=61),
should be an integer which is not true. Hence, answer a is eliminated Similarly, options (b),(d)are eliminated.
Option (c) =3525×60,which is an integer
Reverse gear method 2
If Francis writes 35 pages, then Amit writes 30 pages. Use answer options, to find each person’s individual time the time difference should be one hour. This happens only with option (c)
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:
C
Option (c )
Total = 65 pages
Go from answer options
Option (a)→F=6
A= 4
Together 1024in one hour . This multiplied by (65-4=61),
should be an integer which is not true. Hence, answer a is eliminated Similarly, options (b),(d)are eliminated.
Option (c) =3525×60,which is an integer
Reverse gear method 2
If Francis writes 35 pages, then Amit writes 30 pages. Use answer options, to find each person’s individual time the time difference should be one hour. This happens only with option (c)
Was this answer helpful ?
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