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# multiple jumps by fran

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multiple jumps by fran [#permalink]

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08 Oct 2008, 01:53
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plz explain?
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Re: multiple jumps by fran [#permalink]

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08 Oct 2008, 02:24
A should be the answer.

From stmt1: 1/1.22 = T^2 or T roughly equals 10/11 that is less than 1.

From stmt2: T could be any value > 1/2 sec and hence insufficient.

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Re: multiple jumps by fran [#permalink]

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08 Oct 2008, 02:42
Hi,

1 suff. 1=1.22T^2 -> we can calculate T.

2 not suff. split the time the jump takes into ascedencing+on air+descending
if ascending>1/4, it can be that on air+descending less than 3/4... or maybe more... not suff.

I'd say A

OA?

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Re: multiple jumps by fran   [#permalink] 08 Oct 2008, 02:42
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# multiple jumps by fran

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