Barbara had 80 grey erasers and 60 blue erasers. Barbara gave away 40% of her grey erasers and 55% of her blue erasers. What percentage of her erasers left was blue?
Percentage of grey erasers left
= 100% - 40%
= 60%
Number of grey erasers left
= 60% x 80
= 60100 x 80
= 48
Percentage of blue erasers left
= 100% - 55%
= 45%
Number of blue erasers left
= 45% x 60
=
45100 x 60
= 27
Total number of erasers left
= 48 + 27
= 75
Percentage of erasers left that are blue
=
2775 x 100%
= 36%
Answer(s): 36%
