Bunuel
At a certain company, the bonus pool is divided among a group of employees consisting entirely of engineers and managers so that each engineer receives a bonus of e dollars and each manager receives a bonus of m dollars. Is m at least 20% greater than e?
(1) At least 20% of the employees in the group are managers.
(2) The total amount awarded to managers is at least 20% greater than the total amount awarded to engineers.
Question: Is m >= 1.2e?
(1) At least 20% of the employees in the group are managers.All this says is that out of 100 employees, at least 20 are managers. It is possible that 20 are managers and 80 are engineers.
It is possible that 50-50 are managers and engineers. It is possible that 80 are managers and 20 are engineers.
No info about m and e.
Not sufficient.
(2) The total amount awarded to managers is at least 20% greater than the total amount awarded to engineers.
Say number of engineers = E
Total amount received by engineers = Ee
Total amount received by managers >= 1.2*Ee
- It is possible that m = e and number of managers is 1.2E.
- It is possible that m = 1.2e and number of managers is E.
It is possible that m > 1.2e and number of managers is less than E.
Not sufficient.
Using both statements together, all 3 cases discussed in statement 2 are still possible.
Answer (E)