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
-----------
Sub for D in the 2nd eqn
(R+20) + R = 100

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

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