Dr Azlan purchased an Islamic mortgage $($house$)$ based on BBA contract. Details are given below:

Price of Property $=$ RM$350,000$

Down$-$Payment $=$ RM$50,000$

Profit rate $=r=7\mathrm{.}2\%$

Tenure $=n=30$ years

a$)$ What is banking financing?

b$)$ What is Profit margin?

c$)$ What is Selling price?

d$)$ What is Monthly payment?