Joelle had some pear and lemon face masks.
15 of them were pear. She gave away
13 of the pear face masks and
13 of the lemon face masks. In the end, she had 50 pear and lemon face masks altogether. How many lemon face masks did Joelle have at first?
| |
Pear face masks |
Lemon face masks |
Total |
Comparing pear and lemon 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 lemon face masks at first is repeated. Make the number of lemon 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 = 50
1 u = 50 ÷ 10 = 5
Number of lemon masks at first
= 12 u
= 12 x 5
= 60
Answer(s): 60
