quantumliner wrote:

Machine J runs at a constant rate and produces a lot consisting of 300 bottles in 4 hours. How much less time would it take to produce the lot of bottles if both machines J and P were run simultaneously?

To solve this we need 1 piece of Information:

(i) The rate at which Machine P produces the bottles.

Statement (1) gives no information on the Rate of Machine P, hence is insufficient.

(2) Machine J produces twice the number of bottles per hour as machine P.

Statement (2) tells us that the Rate at which machine P produces bottle is half the rate at which machine J produces. Since this statement gives the information we are looking for, hence is sufficient.

Answer is B.

From statement 1) we can consider that Machine J produces 3000 bottles in 24 Hrs right? So, I think even Statement 1) would be suffice to answer the question Can you shed some light on my assumption?

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