Fight Finance

(a) $r_\text{total} = \dfrac{c_1+p_1-p_0}{p_0}$

(b) $r_\text{total} = \dfrac{c_1+p_1}{p_0} - 1$

(c) $r_\text{total} = \dfrac{c_1}{p_0} + \dfrac{p_1-p_0}{p_0}$

(d) $r_\text{total} = \dfrac{c_1}{p_0} + \dfrac{p_1}{p_0}$

(e) $r_\text{total} = \dfrac{c_1}{p_0} + \dfrac{p_1}{p_0} - 1$