Mother and daughter

The ratio of mother and daughter years is 5:2. After seven years, the ratio is 2:1. How many years ago was the daughter born?

Final Answer:

d =  14

Step-by-step explanation:

m:d = 5:2 (m+7):(d+7) = 2:1  2m = 5d 1(m+7) = 2(d+7)  5/2 d+7=2(d+7)  5/2 d+7=2 (d+7)  d=14  m=25 d=25 14=25 14=270=35



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