Project #80907 - algebra 2 - High Schoool level

Each week, Rosario drives to an ice skating rink that is 120 miles away. The round-trip takes 2.75 hours. If he averages 55 miles per hour on his way to the rink, which equation can be used to find x, the number of miles per hour he averages on his way home?
 
 
A boat has a speed of 5 mph in calm water. It takes the boat 3 hours to travel upstream but only 2 hours to travel the same distance downstream. Using the data in the table, what is the value of c, the speed of the current?

 
Distance
Rate
Time
Upstream
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3
Downstream
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2
       
A plane flies round-trip to Philadelphia. If flies to Philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour. If the total trip takes 6.5 hours, how many miles does the plane fly round-trip?
Kalon and his friend Marna own a chimney sweep service company. Working together, they can clean a chimney in 1mc021-1.jpg hours. If it takes Kalon 4 hours to clean a 20-foot chimney by himself, how long does it take Marna to clean the same size chimney by herself?

 
Rate
Time
Fraction Completed
Kalon
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mc021-3.jpg
mc021-4.jpg
Marna
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mc021-6.jpg
mc021-7.jpg
       

Subject Mathematics
Due By (Pacific Time) 09/03/2015 11:35 am
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