Dana had 60 blue buttons and 32 black buttons. Dana gave away 20% of her blue buttons and 50% of her black buttons. What percentage of her buttons left was black?
Percentage of blue buttons left
= 100% - 20%
= 80%
Number of blue buttons left
= 80% x 60
= 80100 x 60
= 48
Percentage of black buttons left
= 100% - 50%
= 50%
Number of black buttons left
= 50% x 32
=
50100 x 32
= 16
Total number of buttons left
= 48 + 16
= 64
Percentage of buttons left that are black
=
1664 x 100%
= 25%
Answer(s): 25%
