Question : In a class, the average weight of 4 boys is 50 kg and the average weight of 4 girls is 40 kg. What is the average weight of all the 8 students taken together?

Option 1: 44 kg

Option 2: 48 kg

Option 3: 45 kg

Option 4: 42 kg

Question : The average weight of a group of 20 persons is 40 kg. The average weight of another group of 40 persons is K kg. If the average weight of all the 60 persons is 60 kg, then what is the value of K?

Option 1: 80

Option 2: 60

Option 3: 40

Option 4: 70

Question : The average weight of six persons is 30 kg. If a new person joins this group, then the average weight becomes 28 kg. What is the weight of the new person?

Option 1: 22 kg

Option 2: 14 kg

Option 3: 15 kg

Option 4: 16 kg

Question : The average weight of 9 boxes is 61 kg. If three boxes having an average weight of 70 kg are removed, then what will be the new average weight of the remaining boxes?

Option 1: 55.5 kg

Option 2: 54 kg

Option 3: 56.5 kg

Option 4: 45.5 kg

Question : The average weight of 20 boxes of oranges is 2 kg, and the average weight of 30 boxes of mangoes is 3 kg. Find the average weight of these boxes of fruits, taken together.

Option 1: 2.6 kg

Option 2: 3.2 kg

Option 3: 1.8 kg

Option 4: 2.4 kg