When the sum of two numbers is multiplied by 5, the product is divisible by 15. Which one of the following pairs of numbers satisfies the above condition?  Answers:
A) 240, 355
B) 250, 341
C) 245, 342
D) 250, 261
E) NOne
Sol.   Clearly, 5 x (sum of numbers) is divisible by 15.   ∴ Sum of numbers must be divisible by 3.   Now, (250+341) = 591 is divisible by 3. So, required pair is 250, 341.   Answer 250, 341
<result>B</result>
When the sum of two numbers is multiplied by 5, the product is divisible by 15. Which one of the following pairs of numbers satisfies the above condition?