Hi reto,
This question, while wordy, is perfect for TESTing VALUES..
We're given a series of production rates for a machine. Let's TEST VALUES:
To start, let's say the machine creates 2 items/hour in the first hour.
During the next 2 hours, the rate doubles, so we have 4 items/hour for 2 hours.
Finally, during the last hour, the rate doubles again, so we have 8 items/hour for the last hour.
X is the total number of items during the first 3 hours, so X = 2+4+4 = 10 items
We're asked for the number of items made during all 4 hours (relative to the value of X); the total number of items in all 4 hours is 2+4+4+8 = 18 items.
Since the answers are all DIFFERENT fractions, each will give us a different answer when X=10....we're looking for whichever one equals 18.....
Answer B: (9/5)(10) = 18 This is a MATCH
Final Answer:
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Rich
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