Average marks of 6 students is 50. If 8 students of having avg marks 7

1.	Average marks of 6 students is 50. If 8 students of having avg marks 70 join them, then average marks of all students becomes1. 61.42. 52.53. 52.24. 50.2
Answer» Correct Answer - Option 1 : 61.4 Formula used: Average = Sum of all observations/Total number of all observations Calculation: Sum of marks of 6 students = 50 × 6 ⇒ 300 Sum of marks of 8 students = 70 × 8 ⇒ 560 Sum of marks of 14 students = 300 + 560 ⇒ 860 Average marks of 14 students = 860/14 ⇒ 61.4 ∴ The average marks of 14 students is 61.4

Average marks of 6 students is 50. If 8 students of having avg marks 70 join them, then average marks of all students becomes1. 61.42. 52.53. 52.24. 50.2

Answer» Correct Answer - Option 1 : 61.4

Formula used:

Average = Sum of all observations/Total number of all observations

Calculation:

Sum of marks of 6 students = 50 × 6

⇒ 300

Sum of marks of 8 students = 70 × 8

⇒ 560

Sum of marks of 14 students = 300 + 560

⇒ 860

Average marks of 14 students = 860/14

⇒ 61.4

∴ The average marks of 14 students is 61.4

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Average marks of 6 students is 50. If 8 students of having avg marks 70 join them, then average marks of all students becomes1. 61.42. 52.53. 52.24. 50.2

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