Q395
The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. The average of the remaining two numbers is :
A.
4.6
AnswerB.
4.8
C.
4.5
D.
4.7
Answer: Option A
Solution
Answer: Option A
Solution:
Let the six number be a, b, c, d, e, fAccording to the question,
⇒ = 3.95
⇒ a + b + c + d + e + f = 23.7.....(i)
= 3.4
⇒ a + b = 6.8.....(ii)
= 3.85
⇒ c + d = 7.7.....(iii)
Put the value of equation (ii) and equation (iii) in equation (i)
e + f = 23.7 - 7.7 - 6.8
e + f = 9.2
∴ Average = = 4.6