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# PS- clocks

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Manager
Joined: 15 Apr 2008
Posts: 166
Followers: 2

Kudos [?]: 10 [0], given: 1

PS- clocks [#permalink]  08 Jan 2009, 10:27
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
How much does a watch loses per day, if it's hands coincide every 64 minutes?

32 8/11 min
36 5/11 min
90 min
96 min

pls show working also
SVP
Joined: 29 Aug 2007
Posts: 2497
Followers: 57

Kudos [?]: 556 [0], given: 19

Re: PS- clocks [#permalink]  08 Jan 2009, 11:08
ALD wrote:
How much does a watch loses per day, if it's hands coincide every 64 minutes?

32 8/11 min
36 5/11 min
90 min
96 min

pls show working also

= (4/64)(24x60)
= 90 min
_________________
Manager
Joined: 20 May 2008
Posts: 57
Followers: 2

Kudos [?]: 5 [0], given: 1

Re: PS- clocks [#permalink]  08 Jan 2009, 23:41
what formula did you use..

(4/64)(24*60)

what is it
Intern
Joined: 19 Nov 2008
Posts: 45
Followers: 0

Kudos [?]: 7 [0], given: 0

Re: PS- clocks [#permalink]  09 Jan 2009, 00:01
4/64 gives the fraction of wastage time for any given period of interval. --- 1

The total period of interval under consideration is 24*60 minutes. ---- 2

We have to multiply 1 and 2 to get fraction of delayed time .
Re: PS- clocks   [#permalink] 09 Jan 2009, 00:01
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