Fill in the blanks.
Abraham spends
15 of his money on 4 beads and 2 pens.
Each pen costs five times as much as each bead.
Let the price of 1 bead be 1 u.
- Cost of 1 pen = _____ u
- Amount that Abraham has spent = _____ u
- Amount that Abraham has left = _____ u
- Amount that Abraham has at first = _____ u
(a)
Change X times into units.
Cost of 1 bead = 1 u
Cost of 1 pen = 5 x 1 u = 5 u
(b)
Amount that Abraham has spent
= 4 x 1 u + 2 x 5 u
= 4 u + 10 u
= 14 u
(c)
Fraction of the money he has left
= 1 -
15 =
45 15 of his money = 14 u
45 of his money = 4 x 14 u = 56 u
Amount that Abraham has left = 56 u
(d)
Amount that Abraham has at first
= 14 u + 56 u
= 70 u
Answer(s): (a) 5; (b) 14; (c) 56; (d) 70