ythanks
ythanks
21-06-2018
Mathematics
contestada
how many points does each boy score on average
Respuesta :
ydhakal77pba0pg
ydhakal77pba0pg
03-07-2018
let b be the number of boys in the class then,
the number of girls is 3b and total number ia 4b.
let p be the avg score by the boys.
then,
(3b x 18 + b x p) /4b = 17
(54+p)/4 = 17
54 + p = 68
p= 14
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