SOLUTION: The sum of two numbers is 70. The second is 10 more than 3 times the first. Find the numbers. Choose the answer with the correct equations used to solve this problem.

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Question 241369: The sum of two numbers is 70. The second is 10 more than 3 times the first. Find the numbers. Choose the answer with the correct equations used to solve this problem.
Answer by stanbon(48568) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of two numbers is 70. The second is 10 more than 3 times the first. Find the numbers. Choose the answer with the correct equations used to solve this problem.
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Equations:
x + y = 70
y = 3x+10
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Subsitute for "y" and solve for "x":
x + (3x+10) = 70
4x = 60
x = 15 (1st number)
y = 3x+10, so y = 45*10 = 55 (2nd number)
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Cheers,
Stan H.