Adam has some money.
Adam spends $390 on some stickers and
20% of the remainder on some marbles.
In the end, he has
57 of the total amount left.
- How much does Adam have at first?
- How much more does Adam spend on marbles than on stickers?
Stickers |
Remainder |
$390 |
Marbles |
Left |
|
1 x 5 |
4 x 5 |
2 x 4 |
5 x 4 |
3 u |
5 u |
20 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
57 of the total amount.
Amount that Adam has at first = 7 u
Amount that Adam spends on the stickers
= 8 u - 5 u
= 3 u
3 u = 390
1 u = 390 ÷ 3 = 130
Amount that Adam has at first
= 7 u
= 7 x 130
= $910
(b)
Amount that Adam spends on marbles
= 5 u
= 5 x 130
= $650
Amount that Adam spends more on marbles than on stickers
= 650 - 390
= $260
Answer(s): (a) $910; (b) $260