I'll start ya on a couple, then you try....
1 Part is 14 total is 25 14/25 x 100% = ? %
2 part = 16 total = ? percent = 80 %
16/? x100% = 80 %
16/? x 100 = 80
1600/? = 80
1600/80 = ?
I'll try numbrrer 5; this one's a bit tricky
Important: In a proportion "Total" is always 100% and "Part" can be any number, including 100 and larger
Question: 15 is what percent of 5 ?
Part = 15
Total = 5 (100%)
Percent = ? 5 : 100% = 15 : X X = (100% * 15) / 5 X = 300%
Answer: 15 is 300% of 5.