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The 2000 Olympic female shoveling champion averaged 15 shove

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The 2000 Olympic female shoveling champion averaged 15 shove [#permalink]  05 Feb 2019, 10:23
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Question Stats:

91% (00:41) correct 8% (00:42) wrong based on 12 sessions
The 2000 Olympic female shoveling champion averaged 15 shovels full of sand every 15 seconds. At this rate approximately how many shovels full of sand would she be able to take (assuming she does not get tired) in 3 minutes?

A) 1

B) 12

C) 15

D) 180

E) 360
[Reveal] Spoiler: OA

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Re: The 2000 Olympic female shoveling champion averaged 15 shove [#permalink]  06 Feb 2019, 01:24
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D.
Her rate of work is 15/15 = 1 shovel per second. In three minutes = 180 seconds she'll shovel 180*1=180.
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Re: The 2000 Olympic female shoveling champion averaged 15 shove [#permalink]  06 Feb 2019, 11:51
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Carcass wrote:
The 2000 Olympic female shoveling champion averaged 15 shovels full of sand every 15 seconds. At this rate approximately how many shovels full of sand would she be able to take (assuming she does not get tired) in 3 minutes?

A) 1

B) 12

C) 15

D) 180

E) 360

We can also solve this question with some number sense

GIVEN: The champion can achieve 15 shovel-fulls every 15 seconds
So, the champion can achieve 30 shovel-fulls every 30 seconds [if we DOUBLE the shoveling time, we DOUBLE the output]
AND the champion can achieve 60 shovel-fulls every 60 seconds [if we DOUBLE the shoveling time, we DOUBLE the output]

In other words, the champion can achieve 60 shovel-fulls every 1 MINUTE
So, the champion can achieve 180 shovel-fulls every 3 MINUTE [if we TRIPLE the shoveling time, we TRIPLE the output]

Cheers,
Brent
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Re: The 2000 Olympic female shoveling champion averaged 15 shove   [#permalink] 06 Feb 2019, 11:51
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