Question 61

The weights of 4 boxes are 30, 40, 50 and 80 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?

Solution

Every other Number in the options except 100 can be formed using the numbers 30,40,50,80.

1) 40 + 80 = 120

2) 30 + 80 = 110

4) 50 + 80 = 130

Hence only 100 cannot be formed.

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