Answer:
the picture attached is the main question while the solution is given in the explanation box below
Step-by-step explanation:
a)
2017 = Loss = 25000 * 8 * [0.42-0.50] = 16000
2018 = Gain = 25000 * 8 * [0.50-0.43] = 14000
b)
2017 = gain = 25000 * 8 * [0.48-0.42] = 12000
c)
2017 = Loss = 25000 * 8 * [0.48 - 0.50] = 4000
2018 = Gain = 25000 * 8 * [0.50-0.43] = 14000