Fill in the blanks.
Asher spends
18 of his money on 5 buttons and 2 marbles.
Each marble costs thrice as much as each button.
Let the price of 1 button be 1 u.
- Cost of 1 marble = _____ u
- Amount that Asher has spent = _____ u
- Amount that Asher has left = _____ u
- Amount that Asher has at first = _____ u
(a)
Change X times into units.
Cost of 1 button = 1 u
Cost of 1 marble = 3 x 1 u = 3 u
(b)
Amount that Asher has spent
= 5 x 1 u + 2 x 3 u
= 5 u + 6 u
= 11 u
(c)
Fraction of the money he has left
= 1 -
18 =
78 18 of his money = 11 u
78 of his money = 7 x 11 u = 77 u
Amount that Asher has left = 77 u
(d)
Amount that Asher has at first
= 11 u + 77 u
= 88 u
Answer(s): (a) 3; (b) 11; (c) 77; (d) 88