Question: Number of hours to print the work at combined rate = ?We need the
magnitude of work and combined rate to answer this question
Statement 1: Yesterday, Press A printed newspapers at a rate of 4,000 newspapers per hour.
We have rate of A but not Rate of B hence
NOT SUFFICIENTStatement 2: Yesterday, Press B printed newspapers at 75% the rate that Press A printed.
We have relation between rate of A but not Rate of B hence
NOT SUFFICIENTCombining the statementsWe have rate of A and with relation of rates of A and B we also have rate of B
Hence, we have combined rate
But we still do
NOT have the amount of work to be done by the two press hence
NOT SUFFICIENTAnswer: Option E
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Printing presses, Press A and Press B, are used to print the daily edition of a certain newspaper. Working together at their individual constant rates, how many hours did it take the 2 presses to print the daily edition of the newspaper yesterday?
(1) Yesterday, Press A printed newspapers at a rate of 4,000 newspapers per hour.
(2) Yesterday, Press B printed newspapers at 75% the rate that Press A printed.