John had some apricot wafers and apple wafers. He gave away 185 wafers to his cousin. 20% of them were apricot wafers and the rest were apple wafers.
- How many apple wafers did he give his cousin?
- John gave some apricot wafers to his sister. 57 of all the wafers he gave away to his cousin and his sister were apricot wafers. How many apricot wafers did he give his sister?
(a)
Percentage of apple wafers
= 100% - 20%
= 80%
Number of apple wafers that John gave to his cousin
= 80% x 185
=
80100 x 185
= 148
(b)
Fraction of all the wafers he gave away to his cousin and his sister that were apple wafers
= 1 -
57=
272 u = 148
1 u = 148 ÷ 2 = 74
Number of apricot wafers that John gave to his cousin and his sister
= 5 u
= 5 x 74
= 370
Number of apricot wafers that John gave to his cousin
= 185 - 148
= 37
Number of apricot wafers that John gave to his sister
= 370 - 37
= 333
Answer(s): (a) 148; (b) 333