anonymous
  • anonymous
A survey was conducted among 400 students of age groups 7–12 years and 13–18 years to find their favorite music genre. The students had to select any one genre out of jazz, rock, and pop. Out of the 200 students in the age group 7–12 years who participated in the survey, 142 liked rock or pop music. The total number of students of both age groups who liked jazz was 72. Using a two-way table, compute the total number of students in the age group 13–18 years who liked rock or pop music. 122 130 142 186
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
@Vocaloid
anonymous
  • anonymous
how
Vocaloid
  • Vocaloid
whoops, small correction, the circled value should be this one|dw:1438208408869:dw|

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Vocaloid
  • Vocaloid
anyway, the first row tells us that (number of kids aged 7-12 who like jazz) + (number of kids aged 7-12 who like rock or pop) = 200 find the number of kids aged 7-12 who like jazz
Vocaloid
  • Vocaloid
|dw:1438208711189:dw| I have to get going, but maybe this will help explain it a bit better?
Vocaloid
  • Vocaloid
A + 142 = 200 A + B = 72 B + C = D 200 + D = 400 the value we want to find is C
Vocaloid
  • Vocaloid
first find A, then B, then D, and then you can use that information to find C
LynFran
  • LynFran
good explanation @Vocaloid
anonymous
  • anonymous
kk
anonymous
  • anonymous
idk how
anonymous
  • anonymous
srry
anonymous
  • anonymous
@Vocaloid
LynFran
  • LynFran
to find A A+142=200 A=200-142 A=?
anonymous
  • anonymous
58
LynFran
  • LynFran
good now A+B=72 A=58 so 58+B=72 B=72-58
anonymous
  • anonymous
14
LynFran
  • LynFran
good B+C= D lets look at the last equation 200+D=400 D=400-200 D=?
anonymous
  • anonymous
200
LynFran
  • LynFran
good now B+C=D and B=14 and D=200 so 14+C=200 c=200-14 c=??
anonymous
  • anonymous
186
LynFran
  • LynFran
yep
anonymous
  • anonymous
thx
LynFran
  • LynFran
welcome thanks to @Vocaloid

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