Question 661082
 Cara is three times as old as Madeline. In 10 years she will only be twice Madeline's age. How old was Cara 4 years ago?
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C = 3M
C+10 = 2(M+10) = 2M+20
3M+10 = 2M+20
M = 10
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C = 30
C-4 = 26