the mean weight of 6 boys in a group is 48 kg. If five students of the group weigh 51 kg, 45 kg, 49 kg, 46 kg and 44 kg, find the weight of the sixth boy
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Answered by
87
Dear student,
Let the weight of sixth boy be xMean of 6 boys=sum of 6 boystotal no. of boys⇒48=51+45+49+46+44+x6⇒48×6=51+45+49+46+44+x⇒288=235+x⇒x=288−235⇒x=53thus, the weight of sixth boy is 53.
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Let the weight of sixth boy be xMean of 6 boys=sum of 6 boystotal no. of boys⇒48=51+45+49+46+44+x6⇒48×6=51+45+49+46+44+x⇒288=235+x⇒x=288−235⇒x=53thus, the weight of sixth boy is 53.
Regards
Answered by
112
Hi !!
Weight of the 6th boy = x
Sum of observations = 51 + 45 + 49 + 46 + 44 + x = 235 + x
No: of observations = 6
Mean = sum of observations / no: of observations
48 = 235 + x /6
235 + x = 6 x 48
235 + x = 288
x = 288 - 235
x = 53
The weight of 6th boy = 53 kg
Weight of the 6th boy = x
Sum of observations = 51 + 45 + 49 + 46 + 44 + x = 235 + x
No: of observations = 6
Mean = sum of observations / no: of observations
48 = 235 + x /6
235 + x = 6 x 48
235 + x = 288
x = 288 - 235
x = 53
The weight of 6th boy = 53 kg
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