Question

if the mean of 18,2x , 27 ,12 ,3x ,5x and 21 is 24,than find x.​

Answer 1

Answer:

x= 45

Step-by-step explanation:

Mean = Sum of all observation/ Total number of observation

$24 = \frac{18 + 2x + 27 + 12 + 3x + 5x + 21 }{7} \\ 168 = 78 + 5x \\ 5x = 168 - 78 \\ 5x = 90 \\ x = 45$

Answer 2

mean = (18+2x+27+12+3x+5x+21)7

24×7=78+10x

168-78=10x

90=10x

x=90/10=9

3x=3×9=27

2x=2×9=18

5x=5×9=45

thanks dear ❤️❤️❤️