Mary and Min bought a present for their best friend. They shared the cost equally between them. Mary used
15 of her savings while Min used
37 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 1 and 3 is 3.
15 of Mary's savings =
37 of Min's savings
315 of Mary's savings =
37 of Min's savings
| |
Mary |
Min |
Total |
| Before |
15 u |
7 u |
22 u |
| Change |
- 3 u |
- 3 u |
- 6 u |
| After |
12 u |
4 u |
16 u |
Amount of savings spent
= 3 u + 3 u
= 6 u
Total amount of savings at first
= 15 u + 7 u
= 22 u
Fraction of their total savings used
=
622=
311 Answer(s):
311 
