Lani has learned 21 of 84 songs in her piano playbook what percent of the total number of songs in the PlayBook has Lani learned

21/84 happens to be an exact fraction of 1/4, which is 25%.

Therefore, Lani has learned 25% of the total number of songs.

If you would like to know what percent of the total number of songs has Lani learned, you can calculate this using the following steps:

x% of 84 songs is 21 songs

x% * 84 = 21

x/100 * 84 = 21 / * 100

x * 84 = 21 * 100 / 84

x = 21 * 100 / 84

x = 25%

Result: Lani has learned 25% of 84 songs in her piano playbook.