Practicing Success
Study the given graph and answer one questions that follows. Degree wise distribution of no. of students working in Class (A, B, C, D and E) Total no. of students = 3000 If 20% of students of class E are transferred to class A, then difference between no. of students in class A and 136% of the students in class D is? |
44 34 54 64 |
44 |
Total no. of students = 3000 ⇒ E = 93° = \(\frac{93°}{360}\) × 3000 ⇒ 20% of E = \(\frac{93°}{360}\) × 3000 × \(\frac{1}{5}\) = 155 ⇒ A = 64.2° = \(\frac{64.2°}{360}\) × 3000 = 535 ⇒ Total student in class A = 535 + 155 = 690 ⇒ D = 57° = \(\frac{57°}{360}\) × 3000 ⇒ 136% of D = \(\frac{57°}{360}\) × 3000 × \(\frac{34}{25}\) = 646 ⇒ Therefore, Difference b/w students in class A (with 20% of E) and students in class D = 690 - 646 = 44 |