The sum of two numbers is 3 and their difference is 1. Find the numbers.

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2 and −1

2 and 1

−2 and 1

1 and 2

answer is B.

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Detailed Solution

Let the two numbers be x and y.
x+y=3 ----- (1)
x−y=1 ----- (2)
Adding equation (1) and (2), we get
2x=4
Or, x=2
Substituting the value x in equation (1), we get
2+y=3
y=3−2
y=1
Therefore, x=2 and y=1
Hence, the two numbers are 2 and 1.
So, Option 2 is correct.

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