1. A postal truck leaves its station and heads for Chicago, averaging 40 mph. An error in the mailing schedule is spotted and 24 minutes after the truck leaves, a car is sent to overtake the truck. If the car averages 50 mpg, how long will it take to catch the postal truck?
2. In the Klysler Auto Factory, robots assemble cars. If 3 robots assemble 17 cars in 10 minutes, how many cars can 14 robots assemble in 45 minutes if all robots work at the same rate all the time?
3. 3 times the first of 3 consecutive odd integers is 3 more than twice the third. What is the 2nd of the 3 consecutive odd integers? I did 3(x + x + 2 + x + 4) + 3 = 2(x +4) but didn't get it.
Thanks! Appreciated if you could show me all the steps algebraically.
2007-07-18
15:20:01
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3 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Mathematics