David obtained 70, 60, 78, 60 and 65 marks (out of 100) in English, Mathematics,Physics, Chemistry ...

David obtained 70, 60, 78, 60 and 65 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?

Answer/Solution

66.6

Steps/Work

Explanation:
Average = (70+ 60+ 78+ 60+ 65 )/ 5 = 333/5 = 66.6.
Answer:C

General Calculator / Auto Solver

David obtained , , , and marks ( out of ) in english, mathematics, physics, chemistry and biology what are his average marks?

Calculated Answer

66.6

Step by Step Solution

In order to solve problem, you must evaluate (n₄ + n₃ + n₂ + n₀ + n₁) / (2 + 3).

n₀ =	70
n₁ =	60
n₂ =	78
n₃ =	60
n₄ =	65
n₅ =	100

(n₄ + n₃ + n₂ + n₀ + n₁) / (2 + 3)
Evaluate n₀ + n₁ = 130
(n₄ + n₃ + n₂ + 130) / (2 + 3)
Evaluate n₂ + 130 = 208
(n₄ + n₃ + 208) / (2 + 3)
Evaluate n₃ + 208 = 268
(n₄ + 268) / (2 + 3)
Evaluate n₄ + 268 = 333
333 / (2 + 3)
Evaluate 2 + 3 = 5
333 / 5
Evaluate 333 / 5 = 66.6
66.6
The answer to the problem and the result of (n₄ + n₃ + n₂ + n₀ + n₁) / (2 + 3) is 66.6