Question

In a class of 70 students 30 failed in mathematics and 35 failed in statistics. 10 students passed in both the subjects. How many students passed only in mathematics?Select on

Answer 1

Answer:

I think 40 students

Step-by-step explanation:

total no students -nof failed in maths =

70 - 30 = 40

Answer 2

30 students passed only in mathematics.

Total number of students in that class = 70

Number of students failed in mathematics = 30

∴ Number of students passed in mathematics = (70 - 30)

                                                                            = 40

Number of students failed in statistics = 35

∴ Number of students passed in statistics = (70 - 35)

                                                                     = 35

Number of students passed in both subjects = 10

∴ Number of students passed only in mathematics = (40 - 10)

                                                                                    = 30

∴ 30 students passed only in mathematics.

This problem can also be solved by using Venn Diagram.