Xuan had some passion fruit and pear face masks.
16 of them were passion fruit. She gave away
14 of the passion fruit face masks and
14 of the pear face masks. In the end, she had 216 passion fruit and pear face masks altogether. How many pear face masks did Xuan have at first?
| |
Passion Fruit face masks |
Pear face masks |
Total |
Comparing passion fruit and pear face masks
at first |
1x4 =
4 u |
5x4 =
20 u |
6x4 =
24 u |
Before |
4 u |
4x5 =
20 u |
|
Change |
- 1 u |
- 1x5 =
- 5 u |
|
After |
3 u |
3x5 =
15 u |
|
The number of pear face masks at first is repeated. Make the number of pear face masks the same. LCM of 5 and 4 is 20.
Total number of face masks in the end
= 3 u + 15 u
= 18 u
18 u = 216
1 u = 216 ÷ 18 = 12
Number of pear masks at first
= 20 u
= 20 x 12
= 240
Answer(s): 240
