Risa had thrice as many markers as pens. After giving away 44 markers and selling 16 markers, she found out that she had twice as many markers as pens left.
- How many markers did Risa have at first?
- How many markers and pens did Risa have altogether at first?
|
Markers |
Pens |
Total |
Before |
3 u |
1 u |
4 u |
Change 1 |
- 44 |
|
- 1 u |
Change 2 |
- 16 |
|
After |
2 u |
1 u |
3 u |
(a)
The number of pens remains unchanged.
Number of markers that Risa gave away or sold
= 3 u - 2 u
= 1 u
1 u = 44 + 16 = 60
Number of markers that Risa had at first
= 3 u
= 3 x 60
= 180
(b)
Total number of markers and pens that Risa had at first
= 1 u + 3 u
= 4 u
= 4 x 60
= 240
Answer(s): (a) 180; (b) 240