Xylium had 70 purple marbles and 56 black marbles. Xylium gave away 40% of her purple marbles and 50% of her black marbles. What percentage of her marbles left was black?
Percentage of purple marbles left
= 100% - 40%
= 60%
Number of purple marbles left
= 60% x 70
= 60100 x 70
= 42
Percentage of black marbles left
= 100% - 50%
= 50%
Number of black marbles left
= 50% x 56
=
50100 x 56
= 28
Total number of marbles left
= 42 + 28
= 70
Percentage of marbles left that are black
=
2870 x 100%
= 40%
Answer(s): 40%
