SOLUTION: The sum of one-fifth of Lucy's age and one-seventh of her age is 12. Use algebra to workout her age. Plz help
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Question 1040278: The sum of one-fifth of Lucy's age and one-seventh of her age is 12. Use algebra to workout her age. Plz help
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
Let n be Lucy's age. Then
n/5+n/7=12
7n+5n=420
n=420/12=35 ☺☺☺
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