A community college has 3,000 students and 90 instructors. The college plans that enrollment will be 3,500 next year. How many new instructors should be hired if the college wants to keep the same student to instructor ratio?
the munber of teaher hired fro the 3500 student should be same as the ratio of present condiion the ratio is given as 3000/90= 500/x or x= (3000*500)/90 x=15 total no. of teacher will be 90 + 15 = 105 now cross check can do 90/3000 = 0.03 105/3500 = 0.03
