Direction (Q. 1 - 5) : Following table shows the percentage of boys and difference between the number of boys and the number of girls among the students of six different schools who appeared in board examination in different years.

1986

1987

1988

1989

% boys

Diff

% boys

Diff

% boys

Diff

% boys

Diff

A

70%

68

60%

35

75%

92

60%

43

B

40%

42

48%

9

45%

24

60%

45

C

44%

30

55%

12

60%

26

56%

12

D

44%

42

57%

42

55%

36

65%

96

E

75%

140

60%

68

70%

132

66%

112

F

44%

45

56%

48

65%

114

45%

42

What is the average of the number of boys who appeared from School E, taking all the four years together ?

Total number of students appearing from School F in the year 1986 is what per cent of the total number of students appearing from School C in the year 1986 ?

Two persons, Rahul and Manoj, undertake a work for ?9000. Rahul alone can do the work in 16 days and Manoj alone can do it in 24 days. If, with the assistance of a third person Niraj, they finish the work in 8 days, what amount will Niraj get ?

Two trains start at the same time from Delhi and Pune and proceed towards each other at the rate of 50 kkm/hr and 37 1/2 km/hr respectively. When they meet, it is found that one train has travelled 400 km more than the other train. What is the distance between Delhi and Pune ?