Question 4
The city government surveyed all of the grade $5$ and $6$ students to determine the popularity of riding a scooter and skateboarding. Of the grade $5$ students, $9\%$ answered that they like riding a scooter and $14\%$ answered that they like skateboarding. Of the grade $6$ students, $11\%$ answered that they like riding a scooter and $7\%$ answered that they like skateboarding. When combining the grade $5$ and $6$ students, the number of students that like riding a scooter is the same as the number of students that like skateboarding. If the total number of grade $5$ and $6$ students in the city is $59400$ and no student likes both riding a scooter and skateboarding, determine the number of grade $6$ students in the city.