Data Interpretation Ques 185
Directions : Study the following bar-diagram carefully and answer the questions given below it.
Number of students attending Maths and Science classes in four different schools

What is the average number of students who attend the Maths classes taking all the schools together?
(1) 90
(2) 80
(3) 85
(4) 75
(5) None of these
Show Answer
Correct Answer: (1)
Solution: (1) Average number of students who attend Maths classes
$=\frac{80+60+120+100}{4}$
$=\frac{360}{4}=90$