Question

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

Answer 1

Step-by-step explanation:

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

24*7=78+10x

168-78=10x

90=10x

x=90/10=9

3x=27

2x=18

5x=45

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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

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