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05 Oct 2005, 02:55
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The average temperatures at noon time from Monday to Friday is 50, the lowest one is 45. What is the possible maximal range of the temperatures?
A. 20
B. 25
C. 40
D. 45
E. 75
Im lost here!
A. 20
B. 25
C. 40
D. 45
E. 75
Im lost here!
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05 Oct 2005, 03:36
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I guess it's B.
the lowest temperature is 45.
So, to get the maximal range, we need to calculate the
max temp on a certain day.
4 days with 45 degrees. T is the temp on the fifth day.
(45*4+T)/5=50
T=70
max range is 70 - 45 = 25.
the lowest temperature is 45.
So, to get the maximal range, we need to calculate the
max temp on a certain day.
4 days with 45 degrees. T is the temp on the fifth day.
(45*4+T)/5=50
T=70
max range is 70 - 45 = 25.
