Question

If sum and difference of two numbers are 34 and 8 respectively, find the numbers

• A. 18 and 13
• B. 23 and 11
• C. 21 and 13
• D. 15 and 23

Answer 1

The correct option is C 21 and 13

Given: Sum = 34, difference = 8
Let the numbers are x and y.
x + y = 34 ... (i)
x - y = 8 ... (ii)

Add equations (i) and (ii)
2x = 42
x = 21
Put the value of x in equation (i)
21 + y = 34
y = 13

So, numbers are 21 and 13.