math
posted by naomie .
A community college has 2,000 students and 50 instructors. Next year the enrollment
will be 6,000. How many new instructors should be hired if the college wants to keep
the same studentto instructor ratio?

2,000 / 50 = 6,000 / x
Cross multiply and solve for x to find the total number of instructors needed. Then subtract 50 from the total to find the number of new instructors needed. 
100 instructors