1. What I do is get the 7/50 to have the denominator as 100 so I just double the 50 and the seven and get 14/100 so it’s 14%.
2. Same thing except 25 goes into 100 four times so I multiple the 3 and 25 by four and get 12/100 so it’s 12%.
3. Do 3 divided by 16, and you get .1875. So that’s 18.75% or you can do 100 divided by 16 and get 6.25. Then you multiply the 6.25 times the 3 and get 18.75%