SOLUTION: solve page 143 problem 24 the sum of three numbers is 20. the second number is 4 times the first, and the sum of the first and third is 8. find the number

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Question 100708This question is from textbook algebra 2
: solve page 143
problem 24
the sum of three numbers is 20. the second number is 4 times the first, and the sum of the first and third is 8. find the number This question is from textbook algebra 2

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
X+Y+Z=20
Y=4X
X+Y=8
X+4X=8
5X=8
X=8/5 ANSWER.
Y=4*8/5
Y=32/5 ANSWER.
8/5+32/5+Z=20
40/5+Z=20
8+Z=20
Z=20-8
Z=12 ANSWER.