David sold
35 of the biscuits he made in the afternoon and half of the remainder in the evening. He had 14 biscuits left unsold.
- How many biscuits did he sell altogether?
- If he sold 2 biscuits for $2.20, how much did he receive from the biscuits he sold?
(a)
Fraction of the biscuits left after selling in the morning
= 1 -
35 =
25 Fraction of the remaining biscuits left after selling in the afternoon
= 1 -
12 =
12 Fraction of the biscuits left after selling in the afternoon
=
12 x
25 =
210 Total number of biscuits at first = 10 u
Number of biscuits left = 2 u
2 u = 14
1 u = 14 ÷ 2 = 7
Number of biscuits sold
= 10 u - 2 u
= 8 u
= 8 x 7
= 56
(b)
Number of sets of 2 biscuits
= 56 ÷ 2
= 28
Amount that David received from the biscuits he sold
= 28 x 2.20
= $61.60
Answer(s): (a) 56; (b) $61.60
