The average weight of 18 boys in a class is 50.25 kg and that of the remaining 9 boys is 45.15 kg. Find the average weights of all the boys in the class.

45.88

No worries! We‘ve got your back. Try BYJU‘S free classes today!

48.55

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

46.55

No worries! We‘ve got your back. Try BYJU‘S free classes today!

49.22

No worries! We‘ve got your back. Try BYJU‘S free classes today!

47.25

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
48.55

Average weight of 18 boys =50.25

Total weight of 18 boys =50.25 $\times$ 18

Average weight of remaining 9 boys =45.15

Total weight of remaining 9 boys =45.15 $\times$ 9

Total weight of all boys in the class =(50.25 $\times$ 18) + (45.15 $\times$ 9)

Total boys =18+9=27

Avg. wt.= 48.55

Suggest Corrections

Similar questions

Q. The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.

Q. The average weight of 16 boys in a class is 50.25 and that of the remaining 8 boys is 45.25. What is the average weight of the class, including the teacher, if the teacher weighs 59 Kg.

There are 50 students in a class, of which 40 are boys. The average weight of the class is 44 kg and that of girls is 40 kg. Find the average weight of the boys.

Q. The average weight of 16 clerks in a class is 50.25 kg and that of 8 managers in a office is 45.15 kg. Find the average weights of all the employees in the office.

The average weight of a class having 100 students is 40 kg. The number of boys in the class is 60 and the number of girls is 40. The average weight of boys is 45. Find the average weight of girls.

Join BYJU'S Learning Program

The average weight of 18 boys in a class is 50.25 kg and that of the remaining 9 boys is 45.15 kg. Find the average weights of all the boys in the class.

The correct option is B 48.55 Average weight of 18 boys =50.25 Total weight of 18 boys =50.25×18 Average weight of remaining 9 boys =45.15 Total weight of remaining 9 boys =45.15×9 Total weight of all boys in the class =(50.25×18) + (45.15×9) Total boys =18+9=27 Avg. wt.= 48.55