Question

if x/y = 3/7 then which of the following cannot be a possible value of (y-x) is: A.4 B. 21 C. 24 D. 84 E. None of these​

Answer 1

Answer:

Step-by-step explanation:

,

Answer 2

The required "option B) 21" is correct.

Step-by-step explanation:

Given,

$\dfrac{x}{y} =\dfrac{3}{7}$

∴ x = 3 and y = 7

To check the options cannot be a possible value of (y - x) = ?

A. 4

y - x = 7 - 3 = 4, it can be possible.

B. 21

y - x = 21 is not divisible by 4, it cannot be possible.

C. 24

y - x = 24 is divisible by 4, it can be possible.

D. 84

y - x = 84 is divisible by 4, it can be possible.

Thus, the required "option B) 21" is correct.