Howard sold
25 of the cookies he made in the morning and half of the remainder in the evening. He had 12 cookies left unsold.
- How many cookies did he sell altogether?
- If he sold 2 cookies for $4.20, 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 = 12
1 u = 12 ÷ 3 = 4
Number of cookies sold
= 10 u - 3 u
= 7 u
= 7 x 4
= 28
(b)
Number of sets of 2 cookies
= 28 ÷ 2
= 14
Amount that Howard received from the cookies he sold
= 14 x 4.20
= $58.80
Answer(s): (a) 28; (b) $58.80
