The average weight of 11 students is 30 kg. If the average weight increases by 0.5 kg when suresh, one of the students leaves the group, what is the suresh's weight?
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Suresh weighs 25kg
Step-by-step explanation:
let 30 be the average weight of 11 student.let W be the total weight.
average weight=total weight÷ number of students.
30=W÷11
W=30×11
W=330kg_equ 1
When Suresh left 0.5kg average weight increase.
30.5=W÷10
W=10×30.5
W=305kg_equ w
subtract 1from 2
=330-305
=25kg
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