Fill in the blanks.
Ahmad spends
14 of his money on 3 stickers and 2 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 Ahmad has spent = _____ u
- Amount that Ahmad has left = _____ u
- Amount that Ahmad 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 Ahmad has spent
= 3 x 1 u + 2 x 5 u
= 3 u + 10 u
= 13 u
(c)
Fraction of the money he has left
= 1 -
14 =
34 14 of his money = 13 u
34 of his money = 3 x 13 u = 39 u
Amount that Ahmad has left = 39 u
(d)
Amount that Ahmad has at first
= 13 u + 39 u
= 52 u
Answer(s): (a) 5; (b) 13; (c) 39; (d) 52