Question

the marks obtained by the students of two sections of a school in English are given in the following table.

marks 0-20 20-40 40-60 60-80 80-100 total
no. of students 8 12 30 30 10 90

(i) less than 40marks in English test.
(ii) mark 80 or above
(iii) marks between (40-60)
(iv) marks between (60-80)​

Answer 1

Answer:

1st...less than 40 marks is 12/180

2...80 or above is100/180

3....btw 40 to 60 are 30/180

4...btw 60 to 80 are 30/180

Please say me that in the given table... In the last... Is it 90 NUMBER OF STUDENTS?