question_answer

In a school there were 1554 students and the ratio of the number of  the boys and girls was 4 : 3 After a few days, 30 girls joined the school but few boys left; as a result the ratio of the boys and girls became 7 : 6 The number of boys who left the school is

A)  86                               

B)  76

C)  74                               

D)  84

E)  None of these