Adam has some money.
Adam spends $120 on some beads and
20% of the remainder on some marbles.
In the end, he has
710 of the total amount left.
- How much does Adam have at first?
- How much more does Adam spend on marbles than on beads?
Beads |
Remainder |
$120 |
Marbles |
Left |
|
1 x 7 |
4 x 7 |
3 x 4 |
7 x 4 |
5 u |
7 u |
28 u |
(a)
20% =
20100 =
15 Remainder
Total : Spent : Left
5 : 1 : 5 - 1
5 : 1 : 4
45 of the remaining amount is the same as
710 of the total amount.
Amount that Adam has at first = 10 u
Amount that Adam spends on the beads
= 12 u - 7 u
= 5 u
5 u = 120
1 u = 120 ÷ 5 = 24
Amount that Adam has at first
= 10 u
= 10 x 24
= $240
(b)
Amount that Adam spends on marbles
= 7 u
= 7 x 24
= $168
Amount that Adam spends more on marbles than on beads
= 168 - 120
= $48
Answer(s): (a) $240; (b) $48