Jasminecurry21 Jasminecurry21
  • 13-03-2017
  • Mathematics
contestada

If the US Senate, with 100 members, contains 20 more Democrats than Republicans, how many Democrats does it contain?

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Аноним Аноним
  • 13-03-2017
D = R + 20
D + R = 100
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Sub for D in the 2nd eqn
(R+20) + R = 100

2R + 20 = 100
2R = 80
R = 40
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D = 60
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