Fill in the blanks.
Adriel spends
15 of his money on 2 beads and 2 cards.
Each card costs thrice as much as each bead.
Let the price of 1 bead be 1 u.
- Cost of 1 card = _____ u
- Amount that Adriel has spent = _____ u
- Amount that Adriel has left = _____ u
- Amount that Adriel has at first = _____ u
(a)
Change X times into units.
Cost of 1 bead = 1 u
Cost of 1 card = 3 x 1 u = 3 u
(b)
Amount that Adriel has spent
= 2 x 1 u + 2 x 3 u
= 2 u + 6 u
= 8 u
(c)
Fraction of the money he has left
= 1 -
15 =
45 15 of his money = 8 u
45 of his money = 4 x 8 u = 32 u
Amount that Adriel has left = 32 u
(d)
Amount that Adriel has at first
= 8 u + 32 u
= 40 u
Answer(s): (a) 3; (b) 8; (c) 32; (d) 40