Glen had
12 as many pens as Julian. Julian had
23 as many pens as Elyse. After Glen and Elyse gave 8 pens to Julian, Julian had four times as many pens as Glen. Elyse then had the same number of pens as Julian.
- What was the ratio of the number of pens Glen had to the number of pens Elyse had in the beginning? Answer in simplest form.
- How many pens did Julian have in the end?
Glen |
Julian |
Elyse |
1 |
2 |
|
|
2 |
3 |
1 |
2 |
3 |
(a)
The number of pens that Julian is repeated.
Ratio of the number of pens that Glen had to the number of pens that Elyse had in the beginning = 1 : 3
|
Glen |
Julian |
Elyse |
Total |
Before |
1x3 = 3 u |
2x3 = 6 u |
3x3 = 9 u |
6x3 = 18 u |
Change |
- 8 |
+ 16 |
- 8 |
|
After |
1x2 = 2 u |
4x2 = 8 u |
4x2 = 8 u |
9x2 = 18 u |
The total number of pens at first and in the end remains unchanged. Make the total number of pens the same. LCM of 6 and 9 is 18.
Number of pens that Julian received from Glen and Elyse
= 2 x 8
= 16
Number of pens that Julian received from Glen and Elyse
= 2 x 1 u
= 2 u
2 u = 8
1 u = 8 ÷ 2 = 4
Number of pens that Ashley had in the end
= 8 u
= 8 x 4
= 32
Answer(s): (a) 1 : 3; (b) 32