Joelle had some kiwi and mango face masks.
15 of them were kiwi. She gave away
13 of the kiwi face masks and
13 of the mango face masks. In the end, she had 110 kiwi and mango face masks altogether. How many mango face masks did Joelle have at first?
| |
Kiwi face masks |
Mango face masks |
Total |
Comparing kiwi and mango face masks
at first |
1x3 =
3 u |
4x3 =
12 u |
5x3 =
15 u |
Before |
3 u |
3x4 =
12 u |
|
Change |
- 1 u |
- 1x4 =
- 4 u |
|
After |
2 u |
2x4 =
8 u |
|
The number of mango face masks at first is repeated. Make the number of mango face masks the same. LCM of 4 and 3 is 12.
Total number of face masks in the end
= 2 u + 8 u
= 10 u
10 u = 110
1 u = 110 ÷ 10 = 11
Number of mango masks at first
= 12 u
= 12 x 11
= 132
Answer(s): 132
