Answer:
40612.50
Step-by-step explanation:
First you work out the percentage decrease:
100 - 5 = 95
95/100 = 0.95 (/ means divide)
Then you work out the amount decrease:
Long Method
45000 x 0.95 = 42750
42750 x 0.95 = 40612.50
or Short Method
45000 x 0.95² = 40612.50