NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 3: Data Handling - Problems and SolutionsQuestion 73
Class 7 - Mathematics - Unit 3: Data Handling - Problems and Solutions
Question. 73
The bar graph given below shows the marks of students of a class in a particular subject:
(a) If 40 is the pass mark, then how many students have failed?
(b) How many students got marks from 50 to 69?
(c) How many students scored 90 marks and above?
(d) If students who scored marks above 80 are given merits then how many merit holders are there?
(e) What is the strength of the class?
Answer:
(a) 4
(b) 18
(c) 4
(d) 10
(e) 42
Detailed Answer with Explanation:
(a) Only 30–39 range fails = 4 students.
(b) 50–59 (7) + 60–69 (11) = 18.
(c) 90–92 = 4.
(d) 80–89 (6) + 90–92 (4) = 10.
(e) Sum of all = 42.