Question

In a class, if 7 students obtained marks less than 30, and 20 students obtained marks less than 40, then the number of students who obtained marks between 30-40 are

Answer 1

Answer:

27 students got marks between 30 and 40

Answer 2

Answer: There are 13 students who obtain marks between 30- 40

Step-by-step explanation:

Given : number of students obtained marks less than 30 = 7

Number of students obtained marks less than 40 = 20

Now we have to find the number of students who obtained marks 30-40

The number of students who obtained marks 30-40= Number of students obtained marks less than 40 - number of students obtained marks less than 30 = 20 - 7 = 13

Hence, the number of students who obtain marks 30-40 is 13