Fill in the blanks.
Albert spends
13 of his money on 3 beads and 3 buttons.
Each button costs twice as much as each bead.
Let the price of 1 bead be 1 u.
- Cost of 1 button = _____ 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 button = 2 x 1 u = 2 u
(b)
Amount that Albert has spent
= 3 x 1 u + 3 x 2 u
= 3 u + 6 u
= 9 u
(c)
Fraction of the money he has left
= 1 -
13 =
23 13 of his money = 9 u
23 of his money = 2 x 9 u = 18 u
Amount that Albert has left = 18 u
(d)
Amount that Albert has at first
= 9 u + 18 u
= 27 u
Answer(s): (a) 2; (b) 9; (c) 18; (d) 27