Jade had some pear and apple face masks.
16 of them were pear. She gave away
13 of the pear face masks and
13 of the apple face masks. In the end, she had 36 pear and apple face masks altogether. How many apple face masks did Jade have at first?
| |
Pear face masks |
Apple face masks |
Total |
Comparing pear and apple face masks
at first |
1x3 =
3 u |
5x3 =
15 u |
6x3 =
18 u |
Before |
3 u |
3x5 =
15 u |
|
Change |
- 1 u |
- 1x5 =
- 5 u |
|
After |
2 u |
2x5 =
10 u |
|
The number of apple face masks at first is repeated. Make the number of apple face masks the same. LCM of 5 and 3 is 15.
Total number of face masks in the end
= 2 u + 10 u
= 12 u
12 u = 36
1 u = 36 ÷ 12 = 3
Number of apple masks at first
= 15 u
= 15 x 3
= 45
Answer(s): 45
