Fill in the blanks.
Alan spends
12 of his money on 5 beads and 3 coins.
Each coin costs four times as much as each bead.
Let the price of 1 bead be 1 u.
- Cost of 1 coin = _____ u
- Amount that Alan has spent = _____ u
- Amount that Alan has left = _____ u
- Amount that Alan has at first = _____ u
(a)
Change X times into units.
Cost of 1 bead = 1 u
Cost of 1 coin = 4 x 1 u = 4 u
(b)
Amount that Alan has spent
= 5 x 1 u + 3 x 4 u
= 5 u + 12 u
= 17 u
(c)
Fraction of the money he has left
= 1 -
12 =
12 12 of his money = 17 u
12 of his money = 1 x 17 u = 17 u
Amount that Alan has left = 17 u
(d)
Amount that Alan has at first
= 17 u + 17 u
= 34 u
Answer(s): (a) 4; (b) 17; (c) 17; (d) 34