Question

If y = kx, what is the value of k if y = 20 and x = 0.4? A)5 B)8 C)9.6 D)50

Answer 1

Given expression :

• y = kx

let's plug the value of x as 0.4 and y as 20 in the given equation :

• 20 = 0.4k

• k = 20 ÷ 0.4

• k = 50

correct choice - D. 50

Answer 2

$\\ \sf\longmapsto y=kx$

$\\ \sf\longmapsto k=\dfrac{y}{x}$

• put values

$\\ \sf\longmapsto k=\dfrac{20}{0.4}$

$\\ \sf\longmapsto k=50$