Answer:
more students got an A.
Simplest form of the fraction will be
![(3)/(14)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/gmgehai8keq9krq79gcf8nc3ar3f8n0ius.png)
Explanation:
In the first period of Mr Navarro's class, fraction of students got an A =
![(17)/(28)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/4y26wg3lrvk0f8n2qsag9vcs6uel0yej7e.png)
In second period class, number of students who got an A =
![(11)/(28)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/teo6pw1hnn4hzy2evbuhfn5h5a0obl548h.png)
Now we have to calculate the fraction of more students who got an A in Mr Navarro's first period class =
![(17)/(28)-(11)/(28)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/1bxkub024qabirkpy101pelzp1cxwh6hw2.png)
=
![(17-11)/(28)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/ny02uisye5jrktlf38qt3vslxrzaq3j1gi.png)
=
![(6)/(28)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/4tlb8fb83zqy6qpt0ybqzq8emwqfikiosg.png)
Therefore,
more students got an A in Mr Navarro's first period class.
To change this fraction in the simplest form we will divide the numerator and denominator by 2.
![(6)/(28)=(3)/(14)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/m788zc0sj4x5isfxllkkgyqmzcdjfy5zea.png)