Daughter 6511

Turtle Dorota is 158 years old, and her daughter Dorotka is 71 years old. How many years ago was Dorota 30 times older than her daughter?

Correct answer:

x =  68

Step-by-step explanation:

158x=30(71x)  158x=30 (71x)  29x=1972  x=291972=68  x=68

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