Question

The sum of two numbers is 18. If one is twice the other, find the numbers.

Answer 1

Let the first number = x

and the second number = y

According to the condition

x + y= 18 …(i)

and x = 27 ….(ii)

Substitute the eq. (ii) in eq. (i), we get

2y + y= 18

x= 2y = 18

⇒ 3y= 18

⇒ y = `18/3 = 6`

Now, substitute the value of y in eq. (ii), we get

x = 2 x 6= 12

∴ The two numbers are 12, 6