Victoria and Anna had an equal number of stamps at first. Victoria used
14 of her stamps and Anna used
16 of her stamps. They used 10 stamps altogether. How many stamps did Anna have in the end?
| |
Victoria |
Anna |
| Before |
4x3 =
12 u |
6x2 =
12 u |
| Change |
- 1x3 =
- 3 u |
- 1x2 =
- 2 u |
| After |
3x3 =
9 u |
5x2 =
10 u |
The number of stamps that Victoria and Anna each had at first is the same. Make the number of stamps that Victoria and Anna each had at first the same. LCM of 4 and 6 is 12.
Number of stamps that Victoria and Anna used
= 3 u + 2 u
= 5 u
5 u = 10
1 u = 10 ÷ 5 = 2
Number of stamps that Anna had in the end
= 10 u
= 10 x 2
= 20
Answer(s): 20
