Question

When I triple a certain number and add 2, I get the same answer as I do when I subtract the number from 50. Find the number.

Answer 1

Let the number be x’ say. 

3 times of a number = 3 × x = 3x 

If 2 is added to 3x then 3x + 2

If ‘x is subtracted from 50 then it becomes 50 – x.

 According to the sum, 

3x + 2 = 50 – x 

3x + x = 50 – 2 

4x = 48 . 

x = 12 

∴ The required number 12