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05-12-2019
Mathematics

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The sum of two numbers is 70.
One number is 10 more the twice the other number.

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05-12-2019

Answer:

20 and 50

Step-by-step explanation:

x + y = 70

y = 2x + 10

Use the substitution method:

y = 70 - x

y = 2x + 10

70 - x = 2x + 10

3x = 60

x = 20

x + y = 70

20 + y = 70

y = 50

x = 20

y = 50

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