5.4 Solving Systems by Subtraction and substitution Question: 9

Question

5.4 Solving Systems by Subtraction and substitution Question: 9

Age  If you add​ Natalie's age and​ Fred's age, the result is 39. If you add​ Fred's age to 4 times​ Natalie's age, the result is 84. Write and solve a system of equations to find how old Fred and Natalie are.

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Part 1

Fred is ________ years old. Natalie is ________ years old.

enter your response's above

Answer 1

F+4N = 84

F +N = 39, subtract 2nd from 1st equation, to get

3N = 45

N =45/3 = 15 years old for Natalie

F= 39-15 = 24 years old for Fred