Barbara had some apple and pomegranate face masks.
14 of them were apple. She gave away
12 of the apple face masks and
16 of the pomegranate face masks. In the end, she had 90 apple and pomegranate face masks altogether. How many pomegranate face masks did Barbara have at first?
| |
Apple face masks |
Pomegranate face masks |
Total |
Comparing apple and pomegranate face masks
at first |
1x2 =
2 u |
3x2 =
6 u |
4x2 =
8 u |
Before |
2 u |
6x1 =
6 u |
|
Change |
- 1 u |
- 1x1 =
- 1 u |
|
After |
1 u |
5x1 =
5 u |
|
The number of pomegranate face masks at first is repeated. Make the number of pomegranate face masks the same. LCM of 3 and 6 is 6.
Total number of face masks in the end
= 1 u + 5 u
= 6 u
6 u = 90
1 u = 90 ÷ 6 = 15
Number of pomegranate masks at first
= 6 u
= 6 x 15
= 90
Answer(s): 90
