Peter sold
25 of the shortbreads he made in the morning and half of the remainder in the afternoon. He had 18 shortbreads left unsold.
- How many shortbreads did he sell altogether?
- If he sold 2 shortbreads for $3.90, how much did he receive from the shortbreads he sold?
(a)
Fraction of the shortbreads left after selling in the morning
= 1 -
25 =
35 Fraction of the remaining shortbreads left after selling in the afternoon
= 1 -
12 =
12 Fraction of the shortbreads left after selling in the afternoon
=
12 x
35 =
310 Total number of shortbreads at first = 10 u
Number of shortbreads left = 3 u
3 u = 18
1 u = 18 ÷ 3 = 6
Number of shortbreads sold
= 10 u - 3 u
= 7 u
= 7 x 6
= 42
(b)
Number of sets of 2 shortbreads
= 42 ÷ 2
= 21
Amount that Peter received from the shortbreads he sold
= 21 x 3.90
= $81.90
Answer(s): (a) 42; (b) $81.90