Abi had 60 blue erasers and 36 grey erasers. Abi gave away 30% of her blue erasers and 50% of her grey erasers. What percentage of her erasers left was grey?
Percentage of blue erasers left
= 100% - 30%
= 70%
Number of blue erasers left
= 70% x 60
= 70100 x 60
= 42
Percentage of grey erasers left
= 100% - 50%
= 50%
Number of grey erasers left
= 50% x 36
=
50100 x 36
= 18
Total number of erasers left
= 42 + 18
= 60
Percentage of erasers left that are grey
=
1860 x 100%
= 30%
Answer(s): 30%
