Question

Which is the value of x, If sum of terms ∑x = 5x + 20, N = 5 and mean (X) = 11?
the answer is 7 but how please explain!!! i will follow you, promise

Answer 1

Answer:

I think 'c'

Step-by-step explanation:

plz mark as brainllest...........................

Answer 2

Step-by-step explanation:

Mean of x = ∑x ÷ n

Here, x = 11

∑x = 5x + 20

n = 5

$\frac{5x + 20}{5} = 11$

=> 5x + 20 = 5 × 11

5x = 55 - 20

=> x = 35/ 5 = 7

Hope it's clear