Respuesta :

colesparks51
75%

15/20 = 75/100 (you just have to multiply both top and bottom by five)
deathdoodle2000

Answer:75%

Step-by-step explanation:

To make a fraction into a percent you have to multiply it by 100

So: 15/20 x 100=15x5=75 so he got 75% of his problems right