Question

If x & y are in direct proportion and if $x=20$ at proportionality constant $=4$, find y.

• A. $2$
• B. $3$
• C. $4$
• D. $5$

Answer 1

The correct option is D $5$

$\frac{x}{y}=K\Rightarrow \frac{20}{y}=4\Rightarrow y=\frac{20}{4}=5$