1.

If x is greater than or equal to 25 and y is less than or equal to 40, then which one of the following is always correct ?1. x is greater than y2. (y - x) is greater than 153. (y - x) is less than or equal to 154. (x + y) is greater than or equal to 65

Answer» Correct Answer - Option 3 : (y - x) is less than or equal to 15

Given :

x is greater than or equal to 25 and y is less than or equal to 40

Calculations :

x can take any value more than or equal to 25 

y can take any value less than or equal to 40 

Now check each option to find which is correct 

Option(1) ⇒ x cannot always be greater than y.  (for example x = 26 and y = 39)

Option(2) ⇒ y - x is greater than 15 is not possible always.  (for example x = 26 and y = 39)

Option(3) ⇒ y - x is always less than or equal to 15 as their gap cannot exceed 15. (For example x = 25 and y = 40 or x = 26 and y = 39)

Option(4) ⇒ x + y greater than or equal to 65 can be correct but not always.  (For example at x = 28 and y = 30)

∴ Option 3 will be the right choice.

 


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