Vanessa had 105 purple pens and 42 white pens. Vanessa gave away 20% of her purple pens and 50% of her white pens. What percentage of her pens left was white?
Percentage of purple pens left
= 100% - 20%
= 80%
Number of purple pens left
= 80% x 105
= 80100 x 105
= 84
Percentage of white pens left
= 100% - 50%
= 50%
Number of white pens left
= 50% x 42
=
50100 x 42
= 21
Total number of pens left
= 84 + 21
= 105
Percentage of pens left that are white
=
21105 x 100%
= 20%
Answer(s): 20%
