1, 10, 25, 50, and so on...
The answer is: reduction
Explanation: since there are prime number markings on the smaller shape, that is the second version. In other words, the bigger shape was the original because there are no prime markings (‘) on it and to turn into the smaller shape, it had to shrink (reduce)
The answer is 102060 because if you multiply 54000 by 1.89 you get 102060
Well, each pizza is cut into 10 slices, that means both pizzas are 10+10 slices, or 20 slices, then they ate 14 of those 20 slices.
so they ate 14 out of 20, or 14/20, which simplifies to 7/10.