Fill in the blanks.
Abraham spends
17 of his money on 5 buttons and 2 cards.
Each card costs twice as much as each button.
Let the price of 1 button be 1 u.
- Cost of 1 card = _____ u
- Amount that Abraham has spent = _____ u
- Amount that Abraham has left = _____ u
- Amount that Abraham has at first = _____ u
(a)
Change X times into units.
Cost of 1 button = 1 u
Cost of 1 card = 2 x 1 u = 2 u
(b)
Amount that Abraham has spent
= 5 x 1 u + 2 x 2 u
= 5 u + 4 u
= 9 u
(c)
Fraction of the money he has left
= 1 -
17 =
67 17 of his money = 9 u
67 of his money = 6 x 9 u = 54 u
Amount that Abraham has left = 54 u
(d)
Amount that Abraham has at first
= 9 u + 54 u
= 63 u
Answer(s): (a) 2; (b) 9; (c) 54; (d) 63