Write ‘T’ for true and 'F' for false for each of the following:
(i) SP = \(\frac{(100\,+\,loss\%)}{100}\times CP\)
(ii) CP = \(\frac{100}{(100\,+\,gain\%)}\times SP\)
(iii) Gain is reckoned on the selling price.
(iv) The discount is allowed on the marked price.