math
posted by jane .
hello ya im helping my son homework.regarding estimation to get reasonable range. Three classes collected aluminum cans for recycling .one class collected 42 cans,another collected 56 cans,and the third class collected 64 cans .what is a reasonable range of the number of cans the classes collected?

math 
saranghae12
i helped you last time why did you post it again?
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