Fill in the blanks.
Alfie spends
13 of his money on 4 stickers and 4 buttons.
Each button costs five times as much as each sticker.
Let the price of 1 sticker be 1 u.
- Cost of 1 button = _____ u
- Amount that Alfie has spent = _____ u
- Amount that Alfie has left = _____ u
- Amount that Alfie has at first = _____ u
(a)
Change X times into units.
Cost of 1 sticker = 1 u
Cost of 1 button = 5 x 1 u = 5 u
(b)
Amount that Alfie has spent
= 4 x 1 u + 4 x 5 u
= 4 u + 20 u
= 24 u
(c)
Fraction of the money he has left
= 1 -
13 =
23 13 of his money = 24 u
23 of his money = 2 x 24 u = 48 u
Amount that Alfie has left = 48 u
(d)
Amount that Alfie has at first
= 24 u + 48 u
= 72 u
Answer(s): (a) 5; (b) 24; (c) 48; (d) 72