Question

who can answer ma question plze: the mean weight of 8 boys is 55kg and the mean weight of a group of girls is 52kg . the mean weight of all the children is 53.2kg. how many girls are there?????

Answer 1

12

Answer 2

total weight of boys=55*8=440
let the no. of girls be x
their total weight =x*52
now mean weight of all is 53.2
so
(440+52x)/(x+8)=53.2
440+52x=53.2x+425.6
14.4=1.2x
x=12
so no. of girls are 12

Answer 3

hey

Answer 4

Thanks to Ash2326 for ur kind help

Answer 5

wht did u wan tto "privatly" chat about?

Answer 6

just to have more private fun!!!!!!!!!!!1

Answer 7

hehehe *removes mind from gutter* wellll we can just tlk here w/ out ppl intudin then u can delete it

Answer 8

ok this seem to be better place

Answer 9

uhuh...soo tell me bout ur self (btw i still dont believe u to b 20)

Answer 10

ok iam not that much old

Answer 11

may i give u ma email now

Answer 12

apparently u cant even form sentances properly no offense

Answer 13

what do u mean by that?

Answer 14

u either type sooo fast u cant keep up or u are lieing by u age to the 10th degree

Answer 15

no way

Answer 16

do u speak english as ur first language

Answer 17

yes!

Answer 18

that is gud

Answer 19

lol

Answer 20

r u their lets

Answer 21

r u there.......their is lik "tht is thier dog.." and yeah we had a bathroom break

Answer 22

hey u there?

Answer 23

yap am here

Answer 24

be honest how old r u...no lie pls....

Answer 25

17

Answer 26

and u plze

Answer 27

hey

Answer 28

am here and waiting u!!!!!!!!!!!!11

Answer 29

16

Answer 30

and what about ur nationality

Answer 31

and believes

Answer 32

american i live in NC wbu

Answer 33

gud , and what do u believe

Answer 34

i mean ur religion

Answer 35

i am a baptist....

Answer 36

is a baptist religion?

Answer 37

i have never heard before

Answer 38

yeah christian....wbu

Answer 39

mmmmmmmmmmm

Answer 40

? where do u live

Answer 41

east Africa

Answer 42

wow!

Answer 43

iam going home now so c u

Answer 44

so u can add up

Answer 45

is that ok

Answer 46

mmmkay i guess....dont 4get to delete tht

Answer 47

ok and many thanks to u

Answer 48

kk

Answer 49

wht is kkkk is all abt

Answer 50

its ok 2x

Answer 51

ok thanks

Answer 52

and bye bye