Vanessa had 72 balloons.
14 of the balloons burst and she gave away
79 of the good balloons. How many balloons did she have left?
| |
Good balloons |
Burst balloons |
Total balloons |
Comparing good and
burst balloons at first |
3x3 =
9 u
|
1x3 =
3 u
|
4x3 =
12 u
|
| Before |
9 u |
3 u |
|
| Change |
- 7 u |
|
|
| After |
2 u |
3 u |
|
The number of good balloons is repeated. Make the number of good balloons the same. LCM of 3 and 9 is 9.
Total number of balloons at first = 12 u
1 u = 72 ÷ 12 = 6
Number of balloons that Vanessa had left
= 2 u
= 2 x 6
= 12
Answer(s): 12
