Question 838398
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Hi,
there are 250 students
{{{highlight_green(x)}}} boys and {{{highlight_green(250-x)}}} girls
 x = 2(250-x) + 40  ****
 3x = 540
  x = 180, the number of boys. There are 70 girls.  (250-180)
CHECKING our answer***
  180 = 140 + 40