SOLUTION: The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number.
I tried using substitution from the two equations given, which I
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I tried using substitution from the two equations given, which I
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Question 196978: The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number.
I tried using substitution from the two equations given, which I think are :
(x + y) / 2 = 7 and
3x = 1/2y
But I didn't have any luck Found 3 solutions by vleith, stanbon, jim_thompson5910:Answer by vleith(2983) (Show Source):
You can put this solution on YOUR website! You have the basic equations correct
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And
Check for answers. Is the average of 2 and 12 = 7?
You can put this solution on YOUR website! The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number.
I tried using substitution from the two equations given, which I think are :
(x + y) / 2 = 7 and
3x = 1/2y
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Those are good equations.
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Rearrange to get:
x + y = 14
y = 6x
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Substitute to solve for "x":
x + 6x = 14
x = 2 (one of the numbers)
y = 12 (the other number)
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Cheers,
Stan H.
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