Question

The mean of x,x+3,x+6 ,x+9, and x+12 is 10 then find x *
a)1
b)2
c)6
d)4​

Answer 1

$mean \: = \frac{x + x + 3 + x + 6 + x + 9 + x + 12}{5}$

$10 = \frac{5x + 30}{5}$

$5x + 30 = 50$

$5x = 50 - 30$

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

$x = 4$

option D is right answer

Answer 2

Answer:D)

X=4

Step-by-step explanation:

mean is average of the given number

so,x+x+3+x+6+x+9+x+12/5=10

so,5x+30/5=10

so,5x+30=50

so,5x=50-30

so,5x=20

so,x=20/5

so,x=4

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