Barbara and Xandra bought a present for their uncle. They shared the cost equally between them. Barbara used
35 of her savings while Xandra used
15 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 1 is 3.
35 of Barbara's savings =
15 of Xandra's savings
35 of Barbara's savings =
315 of Xandra's savings
| |
Barbara |
Xandra |
Total |
| Before |
5 u |
15 u |
20 u |
| Change |
- 3 u |
- 3 u |
- 6 u |
| After |
2 u |
12 u |
14 u |
Amount of savings spent
= 3 u + 3 u
= 6 u
Total amount of savings at first
= 5 u + 15 u
= 20 u
Fraction of their total savings used
=
620=
310 Answer(s):
310 
