A class has 90 students, of which 60 percent are girls and the rest are boys. Boys' average score in English is 30 percent higher than girls. If the average score of all students in English is 56, then what is the average score of only girls in English?

A party for 50 people was organized at their own expense. 48 of them paid Rs 950 each, while the other two paid Rs 1200 more than the group's average expenditure. The total expenditure incurred was.

The average marks of a student in four subjects is 75. If the student obtained 80 marks in the 5^th subject then the new average is ?

16 children are to be divided into two group A and B consisting of 10 and 6 children. The average percent marks obtained by the children of Group A is 75 and the average percent marks of all the 16 children is 76. What is the average percent marks of children of Group B?

A car travel to a place 150 km away at an average speed of 50 km/hr and returns it 30 km/hr. What is the average speed of the whole journey?

A batsman makes a score of 87 runs in the 17^th match and thus  increases his average by 3. Find his average after 17^th match.

The average of 5 consecutive integers starting with ‘M’ is ‘K’. What is the average of 6 consecutive integers stating with (m+1)?

The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crews, whose weighs 42 kg is replaced by a new man. Find the weight of the new man (in kg).