Question

The sum of three consecutive numbers is 51. Find the numbers.

• A. 15, 16, 17
• B. 16, 17, 18
• C. 17, 18, 19
• D. 18, 19, 20

Answer 1

The correct option is B

16, 17, 18

Let the numbers be x, x+1 and x+2.

Then the sum is : x + x+1+ x+2 = 3x + 3

3x + 3 = 51 (given)

3x = 51 – 3 = 48

x = 48 ÷ 3

x = 16

$\therefore$ The numbers are 16, 17, 18.