SOLUTION: Ellie is twice as old as her sister Kate. In seven years the sum of their ages will be 20.
Write a system of equation for this.
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Question 871873: Ellie is twice as old as her sister Kate. In seven years the sum of their ages will be 20.
Write a system of equation for this.
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Already answered in another posting.
See Number 2 in this posted solution:
http://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.871866.html
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