Fill in the blanks.
Alex spends
14 of his money on 3 beads and 3 stickers.
Each sticker costs thrice as much as each bead.
Let the price of 1 bead be 1 u.
- Cost of 1 sticker = _____ u
- Amount that Alex has spent = _____ u
- Amount that Alex has left = _____ u
- Amount that Alex has at first = _____ u
(a)
Change X times into units.
Cost of 1 bead = 1 u
Cost of 1 sticker = 3 x 1 u = 3 u
(b)
Amount that Alex has spent
= 3 x 1 u + 3 x 3 u
= 3 u + 9 u
= 12 u
(c)
Fraction of the money he has left
= 1 -
14 =
34 14 of his money = 12 u
34 of his money = 3 x 12 u = 36 u
Amount that Alex has left = 36 u
(d)
Amount that Alex has at first
= 12 u + 36 u
= 48 u
Answer(s): (a) 3; (b) 12; (c) 36; (d) 48