Sarah and Anna shared some earpins. Sarah's share was 35% of Anna's share. She then increased her share of the earpins by taking 25% of Anna's share. Given that Sarah had 36 fewer earpins than Anna in the end, how many earpins did the girls have altogether?
| |
Sarah |
Anna |
Difference |
Total |
| Before |
7 u |
20 u |
|
27 u |
| Change |
+ 5 u |
- 5 u |
|
|
| After |
12 u |
15 u |
3 u |
27 u |
35% =
35100 =
720Number of earpins that Sarah took from Anna
= 25% x 20 u
=
25100 x 20 u
= 5 u
Number of fewer earpins that Sarah had than Anna in the end = 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Total number of earpins that the girls had
= 27 u
= 27 x 12
= 324
Answer(s): 324
