Question

38. The mean marks obtained by a student in 5 subjects out of 100 is 73. The marks obtained by the student in four subjects are 65,72, 83 and 78. Find the marks obtained by the student in fifth subject.​

Answer 1

Answer:

67

Step-by-step explanation:

$73 = \frac{65 + 72 + 83 + 78 + x}{5}$

$x = 365 - 289 = 67$