Eva and Risa bought a present for their friend. They shared the cost equally between them. Eva used
35 of her savings while Risa used
57 of her savings. What fraction of their total savings was used to buy the present?
Each girl shared half the cost of the present. The amount that each of them spent is the same.
Make the numerators the same. LCM of 3 and 5 is 15.
35 of Eva's savings =
57 of Risa's savings
1525 of Eva's savings =
1521 of Risa's savings
| |
Eva |
Risa |
Total |
| Before |
25 u |
21 u |
46 u |
| Change |
- 15 u |
- 15 u |
- 30 u |
| After |
10 u |
6 u |
16 u |
Amount of savings spent
= 15 u + 15 u
= 30 u
Total amount of savings at first
= 25 u + 21 u
= 46 u
Fraction of their total savings used
=
3046=
1523 Answer(s):
1523 
