Which of the following are in proportion 25 ,10 3 ,27​ answer me please

part a: 850*0.32= 272 people
part b: since 75% is 150, 25% would be 50. so, to get to 100%, you multiply 50 by 4, in that case, there was a total of 200 students
part c: honestly i have no idea :( maybe someone else can help?

part a: since there isn't any number between weighs/pounds, so just multiply that number by 16
part b: 0.14*50=7 gallons --> multiply by 4 to get 28 quarts --> multiply by 2 to get 56 pints

~hope that helps!~