Average - Data Intensity 1 | Multiple Questions and Answers

11.	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?

	A.	47.55 kg
	B.	48 kg
	C.	48.55 kg
	D.	49.25 kg

12.	A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is?

	A.	250
	B.	276
	C.	280
	D.	285

13.	If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is?

	A.	53.33
	B.	54.68
	C.	55
	D.	None of Above