If Bryan gives Adam 33 stickers,
the number of stickers that Bryan will have is 30% of Adam's.
If Adam gives Bryan 19 stickers,
the number of stickers that Bryan will have is 50% of Adam's.
- How many stickers does Bryan have?
- How many stickers does Adam have?
|
Scenario 1 |
Scenario 2 |
|
Bryan |
Adam |
Bryan |
Adam |
Before |
9 u + 33 |
30 u - 33 |
13 u - 19 |
26 u + 19 |
Change |
- 33 |
+ 33 |
+ 19 |
- 19 |
After |
3x3 = 9 u |
10x3 = 30 u |
1x13 = 13 u |
2x13 = 26 u |
(a)
30% =
30100 =
310 50% =
50100 =
12 The totals in both scenarios are the same.
LCM of 13 and 3 = 39
Amount that Bryan has at first in Scenario 2 = Amount that Bryan has at first in Scenario 1
13 u - 19 = 9 u + 33
13 u - 9 u = 33 + 19
4 u = 52
1 u = 52 ÷ 4 = 13
Number of stickers that Bryan has
= 9 u + 33
= 9 x 13 + 33
= 117 + 33
= 150
(b)
Number of stickers that Adam has
= 30 u - 33
= 30 x 13 - 33
= 390 - 33
= 357
Answer(s): (a) 150; (b) 357