Jack had some apple cookies and banana cookies. He gave away 160 cookies to his sister. 40% of them were apple cookies and the rest were banana cookies.
- How many banana cookies did he give his sister?
- Jack gave some apple cookies to his brother. 47 of all the cookies he gave away to his sister and his brother were apple cookies. How many apple cookies did he give his brother?
(a)
Percentage of banana cookies
= 100% - 40%
= 60%
Number of banana cookies that Jack gave to his sister
= 60% x 160
=
60100 x 160
= 96
(b)
Fraction of all the cookies he gave away to his sister and his brother that were banana cookies
= 1 -
47=
373 u = 96
1 u = 96 ÷ 3 = 32
Number of apple cookies that Jack gave to his sister and his brother
= 4 u
= 4 x 32
= 128
Number of apple cookies that Jack gave to his sister
= 160 - 96
= 64
Number of apple cookies that Jack gave to his brother
= 128 - 64
= 64
Answer(s): (a) 96; (b) 64