thehelpertohelp thehelpertohelp
  • 11-07-2021
  • Mathematics
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What do I do for this question

What do I do for this question class=

Respuesta :

devishri1977
devishri1977 devishri1977
  • 11-07-2021

Answer:

Step-by-step explanation:

a + 9 = 15

a = 15 - 9

a = 6

c + 9 = 16

     c = 16 - 9

     c = 7

d = c + 9

   = 7 + 9

  = 16

e = d + 15

  = 16 + 15

e = 31

P(selecting a boy) = total boy /total pupils = 16/31

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