Fill in the blanks.
Ali spends
110 of his money on 4 buttons and 5 cards.
Each card costs five times as much as each button.
Let the price of 1 button be 1 u.
- Cost of 1 card = _____ u
- Amount that Ali has spent = _____ u
- Amount that Ali has left = _____ u
- Amount that Ali has at first = _____ u
(a)
Change X times into units.
Cost of 1 button = 1 u
Cost of 1 card = 5 x 1 u = 5 u
(b)
Amount that Ali has spent
= 4 x 1 u + 5 x 5 u
= 4 u + 25 u
= 29 u
(c)
Fraction of the money he has left
= 1 -
110 =
910 110 of his money = 29 u
910 of his money = 9 x 29 u = 261 u
Amount that Ali has left = 261 u
(d)
Amount that Ali has at first
= 29 u + 261 u
= 290 u
Answer(s): (a) 5; (b) 29; (c) 261; (d) 290