Adam has some money.
Adam spends $270 on some marbles and
30% of the remainder on some stickers.
In the end, he has
47 of the total amount left.
- How much does Adam have at first?
- How much more does Adam spend on stickers than on marbles?
Marbles |
Remainder |
$270 |
Stickers |
Left |
|
3 x 4 |
7 x 4 |
3 x 7 |
4 x 7 |
9 u |
12 u |
28 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
47 of the total amount.
Amount that Adam has at first = 7 u
Amount that Adam spends on the marbles
= 21 u - 12 u
= 9 u
9 u = 270
1 u = 270 ÷ 9 = 30
Amount that Adam has at first
= 7 u
= 7 x 30
= $210
(b)
Amount that Adam spends on stickers
= 12 u
= 12 x 30
= $360
Amount that Adam spends more on stickers than on marbles
= 360 - 270
= $90
Answer(s): (a) $210; (b) $90