Fill in the blanks.
Albert spends
110 of his money on 4 beads and 2 cards.
Each card costs four times as much as each bead.
Let the price of 1 bead be 1 u.
- Cost of 1 card = _____ u
- Amount that Albert has spent = _____ u
- Amount that Albert has left = _____ u
- Amount that Albert has at first = _____ u
(a)
Change X times into units.
Cost of 1 bead = 1 u
Cost of 1 card = 4 x 1 u = 4 u
(b)
Amount that Albert has spent
= 4 x 1 u + 2 x 4 u
= 4 u + 8 u
= 12 u
(c)
Fraction of the money he has left
= 1 -
110 =
910 110 of his money = 12 u
910 of his money = 9 x 12 u = 108 u
Amount that Albert has left = 108 u
(d)
Amount that Albert has at first
= 12 u + 108 u
= 120 u
Answer(s): (a) 4; (b) 12; (c) 108; (d) 120