Question

Please help me I will make you brilliance ​

Answer 1

Option B

Explanation:

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

So, lets solve the equation.

`R = (F)/(N + F)`

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

`=> R * (N + F) = (F)/((N + F)) * (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) ,

`=> (RN)/(1 - R) = (F(1 - R))/((1 - R))`

`=> (RN)/(1 - R) = F`

∴ Hence ,
`F = (RN)/(1 - R)`