How many zlotters will the computer show for the cost of Mary's soft drink?

Answer:
33 ziotters
Step-by-step explanation:
pizza 45 ziotters = 4x8+5 = 37 on Earth
Total 100 ziotters = 8x8 = 64 on Earth
so, Soft drink
=64 -37 = 27 on Earth
27 = 8x3 + 3 = 33 ziotters