GMAT Test Prep: DS-34192901 GMAT Data Sufficiency

In a certain business, production index p is directly proportional to efficiency index e, which is in turn directly proportional to investment index i. What is p if i = 70 ?

(1)e = 0.5 whenever i = 60.

(2)p = 2.0 whenever i = 50.
Select one of the following answer choices