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06 May 2006, 05:11
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In a school, the range of the height of grade one is 18 and grade two is 30.5. Combining them, what is the least value of the range?
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10 May 2006, 22:38
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30.5
If the Grade 1 Maximum height is less than Grade 2 Maximum height, then Range will be 30.5. In all oher cases, it will be more than 30.5.
If the Grade 1 Maximum height is less than Grade 2 Maximum height, then Range will be 30.5. In all oher cases, it will be more than 30.5.
11 May 2006, 02:33
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gmat_crack
Take examples.
Grade 1: Min = 1, max = 19
Grade 2: Min = 1, max = 31.5
Combined: Min = 1, Max=31.5
Therefore range = 30.5
If Grade2 min is more than the grade 1 min, then range will only increase.
For eg
Grade 2 : Min 10, Max : 41.5. So range of combined = 40.5
So minimum value of the combined range = 30.5
I'm not good at explaining. Hope its clear.
