There are two employees for every tiger in the tiger exhibit at a local zoo. for every elephant in the elephant exhibit, there are four employees

If their are 2 employees for every tiger than the equation could be 2t where t stands for tiger(s). For elephants it could be 4m where m stands for elephant(s). The equation would be 2t+4m=e where e stands for the total amount of employees for both the tiger and elephant exhibit.