Question 7
At the start of a course, the ratio of boys to girls in Grade 6 at the TITAN mathematics centre is $4:3$. During the first semester, some girls join and the ratio becomes $3:5$. At the start of the second semester, some boys join and the ratio becomes $8:7$. The number of new boys is two less than the number of new girls. No student leaves. How many students are now in Grade 6?
