Tough and tricky 7: average temperature : PS Archive
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# Tough and tricky 7: average temperature

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Math Expert
Joined: 02 Sep 2009
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Tough and tricky 7: average temperature [#permalink]

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11 Oct 2009, 17:26
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75% (01:52) correct 25% (01:23) wrong based on 26 sessions

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This topic is locked. If you want to discuss this question please re-post it in the respective forum.

The average of temperatures at noontime from Monday to Friday is 50; the lowest one is 45, what is the possible maximum range of the temperatures?

A. 20
B. 25
C. 40
D. 45
E. 75
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Joined: 18 Aug 2009
Posts: 328
Followers: 8

Kudos [?]: 297 [0], given: 13

Re: Tough and tricky 7: average temperature [#permalink]

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11 Oct 2009, 17:31
250-45*4=70.
Range = 70-45 = 25.
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Kudos [?]: 7 [0], given: 9

Re: Tough and tricky 7: average temperature [#permalink]

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11 Oct 2009, 21:45
To find the maximum range, keep all the temp as the minimum(45). Thus the maximum temp would be 70 and hence the max range would be 25.
Math Expert
Joined: 02 Sep 2009
Posts: 36638
Followers: 7106

Kudos [?]: 93660 [0], given: 10583

Re: Tough and tricky 7: average temperature [#permalink]

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12 Oct 2009, 08:44
Set of Tough & tricky questions is now combined in one thread: tough-tricky-set-of-problms-85211.html

You can continue discussions and see the solutions there.
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Re: Tough and tricky 7: average temperature   [#permalink] 12 Oct 2009, 08:44
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