Correct Answer - Option 4 : Neither a nor b
Given∶
55% enjoy rides.
40% play football.
15% sits in park.
Formula Used∶
Basics of percentage and simplification.
Calculation∶
Total students = 100
Let the no. of students who enjoy rides as well as play football be x.
Number of students enjoy rides = 55% of 100 = 55
Number of students play football match = 40% of 100 = 40
Number of students sits in a park = 15% of 100 = 15
Total no. of students in the class = No. of students who enjoy rides + No. of students play football + No. of students who sits in a park - No. of students who enjoy rides as well as play football
⇒
100 = 55 + 40 + 15 - x
⇒
x = 110 - 100
⇒
x = 10
So, statement a and b both are wrong.
∴ 10 students play football as well as enjoy rides. Option 4 is correct.