Answer: 1. 37.5%,
Explanation:
1. we can solve this using a proportion, 10/13.75 = 100/x
a. using cross multiplication we get 10x = 1375
b. when you simplify you get x= 137.5, the percent it was of the whole
c. then subtract the original 137.5-100, and you get 37.5%
The rest of the problems follow a similar fashion