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Question

Paulette, Quentin, and Rosie each donated money to a charity. Paulette gave as much money as Quentin and Rosie gave together. If Quentin had given three times more than he gave, he would have given 40morethanPaulette.AndifRosiehadgiven20$ less, she would have given half as much as Paulette. How much did Paulette give?

A
80$
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B
120$
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C
160$
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D
200$
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Solution

The correct option is D 200LettheamountPaulette,QuentinandRosiedonatedbe p, q , r respectively.Given, p = q + r (1) 3q = p + 40 \Rightarrow q = \dfrac {p + 40}{3} (2)\Rightarrow r - 20 = \dfrac {p}{2} \Rightarrow r = \dfrac {p}{2} + 20 (3)Substituting(2)and(3)in(1),weget p = \dfrac {p + 40}{3} + \dfrac {p}{2} + 20 \Rightarrow p = \dfrac {2p + 80 + 3p + 120}{6} \Rightarrow 6p = 5p + 200 \Rightarrow p = 200 Thus,Paulettedonated 200.

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