Erika and Marion shared some earpins. Erika's share was 40% of Marion's share. She then increased her share of the earpins by taking 20% of Marion's share. Given that Erika had 39 fewer earpins than Marion in the end, how many earpins did the girls have altogether?
| |
Erika |
Marion |
Difference |
Total |
| Before |
2 u |
5 u |
|
7 u |
| Change |
+ 1 u |
- 1 u |
|
|
| After |
3 u |
4 u |
1 u |
7 u |
40% =
40100 =
25Number of earpins that Erika took from Marion
= 20% x 5 u
=
20100 x 5 u
= 1 u
Number of fewer earpins that Erika had than Marion in the end = 1 u
1 u = 39
1 u = 39 ÷ 1 = 39
Total number of earpins that the girls had
= 7 u
= 7 x 39
= 273
Answer(s): 273
