Math, asked by a0079, 5 months ago

The mean of number 20,30,40,x,x+10,70,80,90,is 110. find the missing number.​

Answers

Answered by GaneshRM2006
2

Answer:

mean = sum / no of terms = 20+30+40+x+x+10+70+80+90 / 8

                                    110   = 340+2x/8

                                880   = 340+2x

                           880-340 = 2x

                                540/2 = x

                                   270 =x


a0079: thanks you your ans is right
GaneshRM2006: welcome
GaneshRM2006: mark as brainliest
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