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1. Solve this problem by using a two order system. A man invests $5,200, part at 4% and the balance at 3%. If his total income for the two investments is $194, how much money did he invest at each rate? $_________a0 at 4% and $_________a1 at 3% 2. Solve this problem by using a two order system. A man bought 42 stamps, some 13¢ and some 18¢. How many of each kind did he buy if the cost was $6.66? ____________a0 18¢ stamps and _____________a1 13¢ stamps 3. Use the three steps to solve the problem. With a certain tail wind a jet aircraft arrives at its destination, 1,890 miles away, in 3 hours. Flying against the same wind, the plane makes the return trip in 3 3/8 hours. Find the wind speed and the plane's airspeed. {wind speed is______________ a0 mph, airspeed is_________________ a1 mph}

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