Your MP3 player has 32 gigabytes of music on it. During the next sync, you add 25% more music to it, and it is full. How many gigabytes does the MP3 player hold now?

42.6667 gigabytes (rounded up to four decimal places).

Step-by-step explanation:

The MP3 player currently has 32 gigabytes

You add 25% more music and its full

When its full its 100% music

So it currently has 100% - 25% = 75% music

75% music is equal to 32 gigabytes

How many gigabytes are in 100%?

Cross multiplying gives:

(100 * 32) : 75 = 42.6667 gigabytes (rounded up to four decimal places)