This was probably not answered on time
<span />
12 songs. 25% of 12 is 3, so you add 3 to 12 and get 15. You then find that 20% of 15 is 3 so you subtract 3 from 15 and get 12 again.
Answer:
b
Step-by-step explanation:
.55*X=231 .....X=231/.55.......X= 420
