Answer:
21
Step-by-step explanation:
from 300 to 250 is well, just a change of 50 units.
if we take the 300 as the 100%, what is 50 off of it as percentage?

Answer:
Store 1 has the best deal at $56.70. The order goes as shown below!
Step-by-step explanation:
Store 2 - $61.20
Store 3 - $60.75
Store 1 - $56.70
Hope this helped :)