Fill in the blanks.
Abdul spends
19 of his money on 3 buttons and 2 beads.
Each bead costs four times as much as each button.
Let the price of 1 button be 1 u.
- Cost of 1 bead = _____ u
- Amount that Abdul has spent = _____ u
- Amount that Abdul has left = _____ u
- Amount that Abdul has at first = _____ u
(a)
Change X times into units.
Cost of 1 button = 1 u
Cost of 1 bead = 4 x 1 u = 4 u
(b)
Amount that Abdul has spent
= 3 x 1 u + 2 x 4 u
= 3 u + 8 u
= 11 u
(c)
Fraction of the money he has left
= 1 -
19 =
89 19 of his money = 11 u
89 of his money = 8 x 11 u = 88 u
Amount that Abdul has left = 88 u
(d)
Amount that Abdul has at first
= 11 u + 88 u
= 99 u
Answer(s): (a) 4; (b) 11; (c) 88; (d) 99