Lynn had 155 more beads than Olivia. After Olivia gave away
13 of her beads, Lynn had four times as many beads as Olivia. How many beads did Olivia have at first?
| |
Lynn |
Olivia |
Comparing Lynn
and Olivia at first |
155 more |
|
| Before |
8 u |
3 u |
| Change |
|
- 1 u |
| After |
|
2 u |
Comparing Lynn
and Olivia in the end |
4x2 =
8 u |
1x2 =
2 u |
The number of beads that Lynn had at first and in the end remains unchanged. Make the number of beads that Lynn had the same. LCM of 8 and 4 is 8.
Number of beads that Lynn had more than Olivia at first
= 8 u - 3 u
= 5 u
5 u = 155
1 u = 155 ÷ 5 = 31
Number of beads that Olivia had at first
= 3 u
= 3 x 31
= 93
Answer(s): 93
