The average weight of 17 babies is 92 kg. If 18 new babies are added, the new average increase by 3 kg. What will be the average weight of the 18 new babies?98.897.894.698.5
Question
The average weight of 17 babies is 92 kg. If 18 new babies are added, the new average increase by 3 kg. What will be the average weight of the 18 new babies?98.897.894.698.5
Solution
The total weight of the 17 babies is 17 * 92 = 1564 kg.
Let's denote the total weight of the 18 new babies as X.
The new average weight after adding the 18 new babies is 92 + 3 = 95 kg.
The total number of babies after adding the new ones is 17 + 18 = 35.
So, the total weight of all the babies is 35 * 95 = 3325 kg.
Subtracting the total weight of the first 17 babies from the total weight of all the babies gives us the total weight of the 18 new babies:
X = 3325 - 1564 = 1761 kg.
Finally, the average weight of the 18 new babies is X / 18 = 1761 / 18 = 97.83 kg.
So, the average weight of the 18 new babies is approximately 98 kg.
Similar Questions
The average weight of 8 persons increases by 3.5 kg when a new person comes in place of one of them weighing 72 kg. What might be the weight of the new person ?*1 point70 kg75 kg100 kg85 kg
3 boxes have some average weight.When one box which weighs 89 kg is replaced by another box,the average weight increases by 5 kg. How much the new box weighs?109 kg94 kg104 kg84 kg
The average weight of 6 women is increased by 9 kg when one of them whose weight is 80 kg is replaced by another woman. What is the weight of the new women (in kg)?
The average weight of a class of 33 students is 47 kg. If the weight of the teacher is included, then the average weight of the class increases by 1 kg. What is the weight of the teacher?
The average weight of 20 students in aclass is increased by 1.8kg when one of the students, who weights 45kg is replaced by a new student. What is the weight of the new student?Options77 kg70 kg81kg51 kg63 kg
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.