Fiona had some pomegranate and mango face masks.
14 of them were pomegranate. She gave away
15 of the pomegranate face masks and
15 of the mango face masks. In the end, she had 144 pomegranate and mango face masks altogether. How many mango face masks did Fiona have at first?
| |
Pomegranate face masks |
Mango face masks |
Total |
Comparing pomegranate and mango face masks
at first |
1x5 =
5 u |
3x5 =
15 u |
4x5 =
20 u |
Before |
5 u |
5x3 =
15 u |
|
Change |
- 1 u |
- 1x3 =
- 3 u |
|
After |
4 u |
4x3 =
12 u |
|
The number of mango face masks at first is repeated. Make the number of mango face masks the same. LCM of 3 and 5 is 15.
Total number of face masks in the end
= 4 u + 12 u
= 16 u
16 u = 144
1 u = 144 ÷ 16 = 9
Number of mango masks at first
= 15 u
= 15 x 9
= 135
Answer(s): 135
