Posted by **mar** on Wednesday, March 23, 2011 at 9:58pm.

there are 80 fourth graders in school of these, 35 were boys. what fractional part of the fourth graders were girls

- math -
**Jai**, Wednesday, March 23, 2011 at 10:09pm
to get the fractional part of girls, we first subtract 35 from 80 to get the number of girls:

80 - 35 = 45

then we divide this by the total, which is 80:

45/80

reduce to lowest term by dividing both numerator and denominator by the GCF (greatest common factor) which is 5:

45/5 = 9

80/5 = 16

thus 45/80 = 9/16

hope this helps~ :)

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