Question

If x/y=3/7, then which of the following cannot be a possible value of (y-x)?

Answer 1

Answer:

Veins are blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.

Explanation:

Answer 2

Answer:

The required "option B) 21" is correct.

Step-by-step explanation:

Given,

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

y

x

=

7

3

∴ 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