Adam has some money.
Adam spends $240 on some marbles and
30% of the remainder on some beads.
In the end, he has
58 of the total amount left.
- How much does Adam have at first?
- How much more does Adam spend on beads than on marbles?
Marbles |
Remainder |
$240 |
Beads |
Left |
|
3 x 5 |
7 x 5 |
3 x 7 |
5 x 7 |
6 u |
15 u |
35 u |
(a)
30% =
30100 =
310 Remainder
Total : Spent : Left
10 : 3 : 10 - 3
10 : 3 : 7
710 of the remaining amount is the same as
58 of the total amount.
Amount that Adam has at first = 8 u
Amount that Adam spends on the marbles
= 21 u - 15 u
= 6 u
6 u = 240
1 u = 240 ÷ 6 = 40
Amount that Adam has at first
= 8 u
= 8 x 40
= $320
(b)
Amount that Adam spends on beads
= 15 u
= 15 x 40
= $600
Amount that Adam spends more on beads than on marbles
= 600 - 240
= $360
Answer(s): (a) $320; (b) $360