Dana had 105 balloons.
15 of the balloons burst and she gave away
1112 of the good balloons. How many balloons did she have left?
| |
Good balloons |
Burst balloons |
Total balloons |
Comparing good and
burst balloons at first |
4x3 =
12 u
|
1x3 =
3 u
|
5x3 =
15 u
|
| Before |
12 u |
3 u |
|
| Change |
- 11 u |
|
|
| After |
1 u |
3 u |
|
The number of good balloons is repeated. Make the number of good balloons the same. LCM of 4 and 12 is 12.
Total number of balloons at first = 15 u
1 u = 105 ÷ 15 = 7
Number of balloons that Dana had left
= 1 u
= 7
Answer(s): 7
