Cole had some cherry wafers and cranberry wafers. He gave away 135 wafers to his sister. 20% of them were cherry wafers and the rest were cranberry wafers.
- How many cranberry wafers did he give his sister?
- Cole gave some cherry wafers to his cousin. 25 of all the wafers he gave away to his sister and his cousin were cherry wafers. How many cherry wafers did he give his cousin?
(a)
Percentage of cranberry wafers
= 100% - 20%
= 80%
Number of cranberry wafers that Cole gave to his sister
= 80% x 135
=
80100 x 135
= 108
(b)
Fraction of all the wafers he gave away to his sister and his cousin that were cranberry wafers
= 1 -
25=
353 u = 108
1 u = 108 ÷ 3 = 36
Number of cherry wafers that Cole gave to his sister and his cousin
= 2 u
= 2 x 36
= 72
Number of cherry wafers that Cole gave to his sister
= 135 - 108
= 27
Number of cherry wafers that Cole gave to his cousin
= 72 - 27
= 45
Answer(s): (a) 108; (b) 45