Question : Directions: The weights of 4 boxes are 90, 30, 20, and 50 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes, and in combination a box can be used only once?

Option 1: 190

Option 2: 170

Option 3: 100

Option 4: 150

Question : Directions: The weights of the four boxes are 90, 30, 40, and 60 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes, and in combination, a box can be used only once?

Option 1: 200

Option 2: 220

Option 3: 180

Option 4: 130

Question : Directions: The weights of the 4 boxes are 90, 40, 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?

Option 1: 200

Option 2: 260

Option 3: 180

Option 4: 170

Question : Directions: The weight of the four boxes is 20, 40, 80, and 90 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?

Option 1: 220

Option 2: 230

Option 3: 150

Option 4: 210

Question : The sum of weights of A and B is 80 kg. 50% of A's weight is $\frac{5}{6}$ times the weight of B. Find the difference between their weights.

Option 1: 20 kg

Option 2: 10 kg

Option 3: 25 kg

Option 4: 15 kg