Question

please help me I will make you brilliance ​

Answer 1

Answer:

Option B

Step-by-step explanation:

In this question , we just need to make "F" as the subject of the equation.

So, lets solve the equation.

$R = \frac{F}{N + F}$

→ Multiplying (N + F) on both the sides ,

$=> R \times (N + F) = \frac{F}{(N + F)} \times (N + F)$

$=> RN + RF = F$

→ Substracting both the sides with RF ,

$=> RN + RF - RF = F - RF$

$=> RN = F - RF$

→ Taking F common from R.H.S ,

$=> RN = F(1 - R)$

→ Dividing both the sides by (1 - R) ,

$=> \frac{RN}{1 - R} = \frac{F(1 - R)}{(1 - R)}$

$=> \frac{RN}{1 - R} = F$

∴ Hence , $F = \frac{RN}{1 - R}$