Mary had some pomegranate and mangosteen face masks.
14 of them were pomegranate. She gave away
12 of the pomegranate face masks and
16 of the mangosteen face masks. In the end, she had 84 pomegranate and mangosteen face masks altogether. How many mangosteen face masks did Mary have at first?
| |
Pomegranate face masks |
Mangosteen face masks |
Total |
Comparing pomegranate and mangosteen 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 mangosteen face masks at first is repeated. Make the number of mangosteen 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 = 84
1 u = 84 ÷ 6 = 14
Number of mangosteen masks at first
= 6 u
= 6 x 14
= 84
Answer(s): 84
