The weights of 4 boxes are 40,70,80 and 50 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?
A
240
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B
160
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C
200
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D
220
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Solution
The correct option is C220 40+70+80+50=240kilograms 70+80+50=200kilograms 40+70+50=160kilograms Hence 220 kilograms cannot be obtained.