Ken sold
25 of the cookies he made in the morning and half of the remainder in the afternoon. He had 27 cookies left unsold.
- How many cookies did he sell altogether?
- If he sold 3 cookies for $1.40, how much did he receive from the cookies he sold?
(a)
Fraction of the cookies left after selling in the morning
= 1 -
25 =
35 Fraction of the remaining cookies left after selling in the afternoon
= 1 -
12 =
12 Fraction of the cookies left after selling in the afternoon
=
12 x
35 =
310 Total number of cookies at first = 10 u
Number of cookies left = 3 u
3 u = 27
1 u = 27 ÷ 3 = 9
Number of cookies sold
= 10 u - 3 u
= 7 u
= 7 x 9
= 63
(b)
Number of sets of 3 cookies
= 63 ÷ 3
= 21
Amount that Ken received from the cookies he sold
= 21 x 1.40
= $29.40
Answer(s): (a) 63; (b) $29.40
