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Mathematics, 21.06.2019 15:00
An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?
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Mathematics, 21.06.2019 18:00
Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75
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Mathematics, 21.06.2019 18:00
Solve this system of equations. 12x β 18y = 27 4x β 6y = 10
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