SOLUTION: the sum of three numbers is 79 . the second number is 5 times the first , while the third is 15 more than the first . find the numbers

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Question 990414: the sum of three numbers is 79 . the second number is 5 times the first , while the third is 15 more than the first . find the numbers
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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F=first number; S=second number=5F; T=third number=F+15
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F+S+T=79
F+(5F)+(F+15)=79
7F+15=79
7F=64
F=64/7
S=5(F)=5(64/7)=320/7
T=F+15=64/7+105/7=169/7
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ANSWER: The numbers are 64/7, 320/7, and 169/7.
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CHECK:
(64/7)+(320/7)+(169/7)=79
553/7=79
79=79