math
posted by Nai on .
3/4 of the students in a school were girls and the rest were boys. 2/3 of the girls and 1/2 of the boys attended the school carnival. Find the total number of students in the school if 330 students did not attend the carnival.

g = 3b, since 3/4 = 3 * 1/4
2/3 g + 1/2 b attended
2/3 (3b) + 1/2 b = 5/2 b attended
subtract that from the total (b+g) students:
b+g  5/2 b = 330
4b  5/2 b = 330
3/2 b = 330
b = 220
so, g = 660
There are 880 students
660 girls and 220 boys
440 girls and 110 boys attended: 550
the remaining 330 did not attend.
Nice twist to an otherwise common exercise. 
IDK!!!

I got 250, That is a much more resonable answer

The actual answer is 880 students. I checked with my teacher.

since you add the 330 to the 550

so HAH! I beat you!!!!

250 boys