Gabby had some kiwi and orange face masks.
16 of them were kiwi. She gave away
14 of the kiwi face masks and
14 of the orange face masks. In the end, she had 126 kiwi and orange face masks altogether. How many orange face masks did Gabby have at first?
| |
Kiwi face masks |
Orange face masks |
Total |
Comparing kiwi and orange face masks
at first |
1x4 =
4 u |
5x4 =
20 u |
6x4 =
24 u |
Before |
4 u |
4x5 =
20 u |
|
Change |
- 1 u |
- 1x5 =
- 5 u |
|
After |
3 u |
3x5 =
15 u |
|
The number of orange face masks at first is repeated. Make the number of orange face masks the same. LCM of 5 and 4 is 20.
Total number of face masks in the end
= 3 u + 15 u
= 18 u
18 u = 126
1 u = 126 ÷ 18 = 7
Number of orange masks at first
= 20 u
= 20 x 7
= 140
Answer(s): 140
