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# A can complete a piece of work in 4 days. B takes double the

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CEO
Joined: 15 Aug 2003
Posts: 3454

Kudos [?]: 919 [0], given: 781

A can complete a piece of work in 4 days. B takes double the [#permalink]

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14 Sep 2003, 04:37
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A can complete a piece of work in 4 days. B takes double the time
taken by A. C takes double that of B, and D takes double that of C to
complete the same task. They are paired in groups of two each. One pair
takes two-thirds the time needed by the second pair to complete the work.
Which is the first pair?

a) A, B
b) A, C
c) B, C
d) A, D

Kudos [?]: 919 [0], given: 781

Senior Manager
Joined: 22 Aug 2003
Posts: 257

Kudos [?]: 13 [0], given: 0

Location: Bangalore

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14 Sep 2003, 04:50
In questions of the type: Which of the following is the answer and u have to trial and check. Always better to start in the middle or at the bottom (so that even u are off u know to move up or down, eleminating two choices)
- Vicks
ps: formula used: 1/r + 1/m = 1/n n = together rate
r,m - individual rates.

Kudos [?]: 13 [0], given: 0

SVP
Joined: 30 Oct 2003
Posts: 1788

Kudos [?]: 112 [0], given: 0

Location: NewJersey USA

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18 Jan 2004, 20:42
(B,C) takes 2/3 time taken by (A,D)

Kudos [?]: 112 [0], given: 0

Manager
Joined: 26 Dec 2003
Posts: 227

Kudos [?]: 3 [0], given: 0

Location: India

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18 Jan 2004, 20:52
d) A, D hmmmm little more than a min by trying each and every choice

Kudos [?]: 3 [0], given: 0

Senior Manager
Joined: 23 Aug 2003
Posts: 460

Kudos [?]: 27 [0], given: 0

Location: In the middle of nowhere

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19 Jan 2004, 13:51
C) B,C

Formual used the same as aforementioned by Vicks.

Vivek.
_________________

"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

Kudos [?]: 27 [0], given: 0

19 Jan 2004, 13:51
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# A can complete a piece of work in 4 days. B takes double the

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