The students in two classes of "Underachiever" high school took a test. x, a, and c are, respectively, the standard...

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A

B

C

D

E

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Economist GMAT

What was the average production rate of cups of espresso per machine for machines A, B, C and D last week?

1) Machine A and D produced a total of 503 cups of espresso last week
2) Machine B and E produced a total of 405 cups of espresso last week

OA E
Source: — Data Sufficiency |