SOLUTION: one number is three times another number and their sum is 164.find the number?

Question 143931: one number is three times another number and their sum is 164.find the number?

Answer by ptaylor(2198) (Show Source): You can put this solution on YOUR website!
Let x=the other other number
Then 3x=the first number
Now we are told that:
x+3x=164 or
4x=164 divide both sides by 4
x=41----------------------------the other number
3x=3*41=123------------------------the first number
CK
41+123=164
164=164
Another way:
Let x=the first number
And let y=the second number
x+y=164-----------------------eq1
x=3y-----------------------------eq2
Substitute x=3y from eq2 into eq1 and we get:
3y+y=164
4y=164
y=41-------------the second number
substitute y=41 into eq2
x=3y=3*41=123-------the first number

Hope this helps---ptaylor
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