PART 1
1) part-to-part

2) percent of the part to the whole of the problem

3) part-to-whole

4) to subtract the numbers. ex. 45 students - 6 students = 39 students

PART 2
1) 17,000 soilders-to-30,000 rifles

2) 56% of the soilders have rifles

3) 17,000/ 30,000

4) the difference is 13,000 rifles