Question

The sum of a number, x, and twice a number, y, is 36. Their difference is 6.

Find the numbers.
A. 6 and 36
B. 15 and 21
C. 16 and 10
D. 6 and 12

Answer 1

x=16, y=10. (16, 10). C)

Explanation:

x+2y=36

x-y=6

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x+2y=36

-x+y=-6

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3y=30

y=30/3

y=10

x+2(10)=36

x+20=36

x=36-20

x=16