In a family, the average age of 5 children is 5 years. If the age of their father also included, the average age will be increased by 100%. Find the age of father.
1). 45years
2). 35years
3). 39 years
4). 30 years
Average weight of Sunil and Ravi is 45 kg. Average weight of Ravi and Pranit is 41 kg. And average weight of Sunil and Pranit is 42 kg. Then find the weight of Sunil.
In a group the average age of 8 people increases by 2 years when two people whose ages were 35 years and 45 years are replaced by two women. Find the average age of 2 women.
36 years
48 years
96 years
41 years
The average height of A, B and C is 148 cm. If the average height of A and B is 136 cm and that of B and C is 125 cm, then what is the height (in cm) of B?
1). 56
2). 78
3). 112
4). 130
The mean of marks secured by 60 students in division A of class X is 66, 45 students of division B is 62 and that of 75 students of division C is 60. Find the mean of marks of the students of three divisions of Class X.
1). 61.8
2). 62.5
3). 61.1
4). 63.9