Question

8. Three groups of 10 kids. The average weight of a kid in each
group is 35 kilograms. One more kid joined each group.
i) The average weight of a kid in the first group is still 35
kilograms
ii) 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.​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

35 ,  46, 24 respectively.

Step-by-step explanation:

for 1st group

sum of 10 kids/10 = 35 (average formula)

therefore sum of ten kids = 350

new average = old average

so

sum of 11 kids / 11 = 35

sum of 11 kids = 35 * 11

                       = 385

weight of new kid = sum of 11 kids - sum of 10 kids

                              = 385 - 350

                              = 35

for 2nd group

sum of ten kids = 350

new average = 36

sum of 11 kids = 36 *11

                       = 396

weight of new kid = 396 - 350

                               = 46

for 3rd group

new average = 34

sum of 11 kids = 34*11

                       = 374

weight of new kid = 374 - 350

                              = 24

Hope this helps!!!