Question 1123192
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senators + representatives = 550


S        + R               = 550


S        + (5*S -170)      = 550


S + 5S - 170 = 550


6S = 550 + 170 =  720


S = 720/6 = 120.


<U>Answer</U>.  120 senators and  550 - 120 = 430 representatives.
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Solved.