Fill in the blanks.
Ali spends
16 of his money on 4 stickers and 3 pencils.
Each pencil costs four times as much as each sticker.
Let the price of 1 sticker be 1 u.
- Cost of 1 pencil = _____ 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 sticker = 1 u
Cost of 1 pencil = 4 x 1 u = 4 u
(b)
Amount that Ali has spent
= 4 x 1 u + 3 x 4 u
= 4 u + 12 u
= 16 u
(c)
Fraction of the money he has left
= 1 -
16 =
56 16 of his money = 16 u
56 of his money = 5 x 16 u = 80 u
Amount that Ali has left = 80 u
(d)
Amount that Ali has at first
= 16 u + 80 u
= 96 u
Answer(s): (a) 4; (b) 16; (c) 80; (d) 96