Fill in the blanks.
Aaron spends
12 of his money on 4 beads and 5 marbles.
Each marble costs twice as much as each bead.
Let the price of 1 bead be 1 u.
- Cost of 1 marble = _____ u
- Amount that Aaron has spent = _____ u
- Amount that Aaron has left = _____ u
- Amount that Aaron has at first = _____ u
(a)
Change X times into units.
Cost of 1 bead = 1 u
Cost of 1 marble = 2 x 1 u = 2 u
(b)
Amount that Aaron has spent
= 4 x 1 u + 5 x 2 u
= 4 u + 10 u
= 14 u
(c)
Fraction of the money he has left
= 1 -
12 =
12 12 of his money = 14 u
12 of his money = 1 x 14 u = 14 u
Amount that Aaron has left = 14 u
(d)
Amount that Aaron has at first
= 14 u + 14 u
= 28 u
Answer(s): (a) 2; (b) 14; (c) 14; (d) 28