Sabrina had some pear and kiwi face masks.
13 of them were pear. She gave away
12 of the pear face masks and
14 of the kiwi face masks. In the end, she had 52 pear and kiwi face masks altogether. How many kiwi face masks did Sabrina have at first?
| |
Pear face masks |
Kiwi face masks |
Total |
Comparing pear and kiwi face masks
at first |
1x2 =
2 u |
2x2 =
4 u |
3x2 =
6 u |
Before |
2 u |
4x1 =
4 u |
|
Change |
- 1 u |
- 1x1 =
- 1 u |
|
After |
1 u |
3x1 =
3 u |
|
The number of kiwi face masks at first is repeated. Make the number of kiwi face masks the same. LCM of 2 and 4 is 4.
Total number of face masks in the end
= 1 u + 3 u
= 4 u
4 u = 52
1 u = 52 ÷ 4 = 13
Number of kiwi masks at first
= 4 u
= 4 x 13
= 52
Answer(s): 52
