Posted by Nai on Monday, October 29, 2012 at 5:27pm.
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.
- math - Steve, Monday, October 29, 2012 at 5:43pm
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.
- math - Britney, Monday, October 21, 2013 at 5:31pm
- math - I am not telling you my first name!, Tuesday, October 20, 2015 at 9:45pm
I got 250, That is a much more resonable answer
- math - I am not telling you my first name, Sunday, October 25, 2015 at 5:46pm
The actual answer is 880 students. I checked with my teacher.
- math - I am not telling you my first name, Tuesday, October 27, 2015 at 11:36pm
since you add the 330 to the 550
- math - I am not telling you my first name, Saturday, November 14, 2015 at 1:10pm
so HAH! I beat you!!!!
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