three groups of 10 kids. the average weight of a kid in each group is 35 kilograms. one more kid joined each group . the Average weight of a kid in the first group is still 35 kilograms. the average weight of a kid in the second group is now 36 kilograms. the average weight of a kid in the third group is now 34 kilograms. compute the weight of the new kid in each group
Answers
Answer:
35, 46, 24
Step-by-step explanation:
(1) Avg remained same.. so he is same wt as avg.
(2) his wt = (35) + (11)( 36-35) i.e. old avg + new count(change)
= 46 kg
(3) same logic , ans is 35 - 11 = 24kg
(I)Weight of new kid in the first group is 35 kg
(I)Weight of new kid in the first group is 35 kg (ii)Weight of new kid in the second group is 24 kg
(I)Weight of new kid in the first group is 35 kg (ii)Weight of new kid in the second group is 24 kg (iii)Weight of new kid is 46 kg
GIVEN
Number of groups = 3
Number of kids in each group = 10
The average weight of each kid in each group = was 35kg
The number of kids added in each group = 1.
New Average of first group = 35kg
New Average of second group = 36kg
New Average of third group = 34 kg.
TO FIND :
Weight of new kid in each group.
SOLUTION:
The average weight of each kid = 35 Kg
Average weight = Sum of weights / Number of kids
35 = sum of weight/ 10
Sum of weights of 10 kids = 350kg...............(i)
Now, 1 kid is added to the group.
(I) New Average weight in 1st group is 35 kg
New average = Sum of all the weight /Number of total kid
35 = sum of all the weight / 11
Sum of all the weight = 35 × 11 = 385
Weight of new kid= weight of 11 kids -weight of 10 kids.
Weight of new kid = 385 - 350 = 35
The weight of a new kid in the first group is 35 kg
(ii) New Average Weight In The 2nd Group Is 34
New average = Sum of all the weight /Number of total kid
36 = Sum of all the weight /11
Sum of weight = 34×11 = 374
Weight of new kid = weight of 11 kids -weight of 10 kids.
weight of new kid = 374 - 350 = 24
The weight of a new kid in the second group is 24 kg
(iii) New Average Of Third Group = 36 Kg.
New average = sum of all the weight / Number of total kid
36 = sum of all the weight / 11
the sum of all the weight = 36× 11 = 396
Weight of new kid = weight of 11 kids -weight of 10 kids.
weight of new kid = 396 - 350 = 46
Weight of new kid is 46 kg
Hence,
ence, (I)Weight of new kid in the first group is 35 kg
ence, (I)Weight of new kid in the first group is 35 kg (ii)Weight of new kid in the second group is 24 kg
ence, (I)Weight of new kid in the first group is 35 kg (ii)Weight of new kid in the second group is 24 kg (iii)Weight of new kid is 46 kg
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