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The weights of 4 boxes are 20 kg, 30 kg, 50 kg and 70 kg. If a combination of boxes is made using each box only once then the total weight of the combination cannot be:

The weights of 4 boxes are 20 kg, 30 kg, 50 kg and 70 kg. If a combination of boxes is made using each box only once then the total weight of the combination cannot be:

Explanation

We are given:

  • 4 boxes with weights: 20 kg, 30 kg, 50 kg, and 70 kg.

We need to determine which total weight cannot be made by combining these boxes.

Let's check the combinations:

  1. 20 + 30 + 50 + 70 = 170 kg
  2. 20 + 30 + 50 = 100 kg
  3. 20 + 30 + 70 = 120 kg
  4. 20 + 50 + 70 = 140 kg
  5. 30 + 50 + 70 = 150 kg

Now check if 160 kg can be made:

  • The possible combinations do not result in 160 kg.