Fill in the blanks.
Abdul spends
17 of his money on 4 pens and 4 cards.
Each card costs four times as much as each pen.
Let the price of 1 pen be 1 u.
- Cost of 1 card = _____ u
- Amount that Abdul has spent = _____ u
- Amount that Abdul has left = _____ u
- Amount that Abdul has at first = _____ u
(a)
Change X times into units.
Cost of 1 pen = 1 u
Cost of 1 card = 4 x 1 u = 4 u
(b)
Amount that Abdul has spent
= 4 x 1 u + 4 x 4 u
= 4 u + 16 u
= 20 u
(c)
Fraction of the money he has left
= 1 -
17 =
67 17 of his money = 20 u
67 of his money = 6 x 20 u = 120 u
Amount that Abdul has left = 120 u
(d)
Amount that Abdul has at first
= 20 u + 120 u
= 140 u
Answer(s): (a) 4; (b) 20; (c) 120; (d) 140