If the red suitcase weighs 40 pounds, the blue suitcase weighs 25 pounds and the black suitcase weighs 72 pounds, any two of them together weigh at least 70 pounds.
If the red suitcase weighs 40 pounds, the blue suitcase weighs 25 pounds and the black suitcase weighs 72 pounds, any two of them together weigh at least 70 pounds.