Henry sold
35 of the cookies he made in the morning and half of the remainder in the evening. He had 18 cookies left unsold.
- How many cookies did he sell altogether?
- If he sold 3 cookies for $2.30, how much did he receive from the cookies he sold?
(a)
Fraction of the cookies left after selling in the morning
= 1 -
35 =
25 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
25 =
210 Total number of cookies at first = 10 u
Number of cookies left = 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Number of cookies sold
= 10 u - 2 u
= 8 u
= 8 x 9
= 72
(b)
Number of sets of 3 cookies
= 72 ÷ 3
= 24
Amount that Henry received from the cookies he sold
= 24 x 2.30
= $55.20
Answer(s): (a) 72; (b) $55.20
