posted by johnny on .
The number of Sophomores who eat lunch in the caeteria is about three-fouths the number of Freshmen. If there are 60 more Freshemen than Sophomores, how may Sophomores eat lunch in the caafeteria?
S = .75F
F - S = 60
Substitute .75F for S in second equation and solve for F. Insert that value into the first equation and solve for S. Check by inserting both values into the second equation.