Justin sold
25 of the cupcakes he made in the afternoon and half of the remainder in the evening. He had 9 cupcakes left unsold.
- How many cupcakes did he sell altogether?
- If he sold 3 cupcakes for $4.50, how much did he receive from the cupcakes he sold?
(a)
Fraction of the cupcakes left after selling in the morning
= 1 -
25 =
35 Fraction of the remaining cupcakes left after selling in the afternoon
= 1 -
12 =
12 Fraction of the cupcakes left after selling in the afternoon
=
12 x
35 =
310 Total number of cupcakes at first = 10 u
Number of cupcakes left = 3 u
3 u = 9
1 u = 9 ÷ 3 = 3
Number of cupcakes sold
= 10 u - 3 u
= 7 u
= 7 x 3
= 21
(b)
Number of sets of 3 cupcakes
= 21 ÷ 3
= 7
Amount that Justin received from the cupcakes he sold
= 7 x 4.50
= $31.50
Answer(s): (a) 21; (b) $31.50
