Question

Need help for this question pls urgent

Answer 1

Answer:

61 marks

Step-by-step explanation:

Given,

Marks of the four exams = 65, 80, 76, 68

Let the mark for the fifth exam be = x

Mean of the five exams = 70

Therefore,

By the problem,

$= > \frac{65 + 80 + 76 + 68 + x}{5} = 70$

$= > \frac{289 + x}{5} = 70$

=> 289 + x = 70 × 5

=> 289 + x = 350

=> x = 350 - 289

=> x = 61

Hence,

Marks of the fifth exam is 61 (Ans)