Fill in the blanks.
Abel spends
12 of his money on 3 cards and 2 beads.
Each bead costs four times as much as each card.
Let the price of 1 card be 1 u.
- Cost of 1 bead = _____ u
- Amount that Abel has spent = _____ u
- Amount that Abel has left = _____ u
- Amount that Abel has at first = _____ u
(a)
Change X times into units.
Cost of 1 card = 1 u
Cost of 1 bead = 4 x 1 u = 4 u
(b)
Amount that Abel has spent
= 3 x 1 u + 2 x 4 u
= 3 u + 8 u
= 11 u
(c)
Fraction of the money he has left
= 1 -
12 =
12 12 of his money = 11 u
12 of his money = 1 x 11 u = 11 u
Amount that Abel has left = 11 u
(d)
Amount that Abel has at first
= 11 u + 11 u
= 22 u
Answer(s): (a) 4; (b) 11; (c) 11; (d) 22