Gem and Fiona had an equal number of stickers at first. Gem used
15 of her stickers and Fiona used
17 of her stickers. They used 48 stickers altogether. How many stickers did Fiona have in the end?
| |
Gem |
Fiona |
| Before |
5x7 =
35 u |
7x5 =
35 u |
| Change |
- 1x7 =
- 7 u |
- 1x5 =
- 5 u |
| After |
4x7 =
28 u |
6x5 =
30 u |
The number of stickers that Gem and Fiona each had at first is the same. Make the number of stickers that Gem and Fiona each had at first the same. LCM of 5 and 7 is 35.
Number of stickers that Gem and Fiona used
= 7 u + 5 u
= 12 u
12 u = 48
1 u = 48 ÷ 12 = 4
Number of stickers that Fiona had in the end
= 30 u
= 30 x 4
= 120
Answer(s): 120
