Question

When two consecutive natural numbers are added, the sum is 31; find the numbers.

Answer 1

Let first natural number = x

Then second natural number = x + 1

According to the sum,

x + x + 1 = 31

⇒ 2x + 1 = 31

⇒ 2x = 31 − 1 = 30

⇒ x = `30/2 = 15`

∴ First natural number = 15

and second number = 15 + 1 = 16