Penelope had 133 more stamps than Jane. After Jane gave away
15 of her stamps, Penelope had thrice as many stamps as Jane. How many stamps did Jane have at first?
| |
Penelope |
Jane |
Comparing Penelope
and Jane at first |
133 more |
|
| Before |
12 u |
5 u |
| Change |
|
- 1 u |
| After |
|
4 u |
Comparing Penelope
and Jane in the end |
3x4 =
12 u |
1x4 =
4 u |
The number of stamps that Penelope had at first and in the end remains unchanged. Make the number of stamps that Penelope had the same. LCM of 12 and 3 is 12.
Number of stamps that Penelope had more than Jane at first
= 12 u - 5 u
= 7 u
7 u = 133
1 u = 133 ÷ 7 = 19
Number of stamps that Jane had at first
= 5 u
= 5 x 19
= 95
Answer(s): 95
