Ivory had 115 more stamps than Jean. After Jean gave away
35 of her stamps, Ivory had five times as many stamps as Jean. How many stamps did Jean have at first?
| |
Ivory |
Jean |
Comparing Ivory
and Jean at first |
115 more |
|
| Before |
10 u |
5 u |
| Change |
|
- 3 u |
| After |
|
2 u |
Comparing Ivory
and Jean in the end |
5x2 =
10 u |
1x2 =
2 u |
The number of stamps that Ivory had at first and in the end remains unchanged. Make the number of stamps that Ivory had the same. LCM of 10 and 5 is 10.
Number of stamps that Ivory had more than Jean at first
= 10 u - 5 u
= 5 u
5 u = 115
1 u = 115 ÷ 5 = 23
Number of stamps that Jean had at first
= 5 u
= 5 x 23
= 115
Answer(s): 115
