In a shop, the number of cartons of pomegranate juice sold was
12 the number of cartons left. When 22 more cartons were sold, the total number of cartons sold was 8 less than
56 the number of cartons the shop had at first. How many cartons were left?
|
Sold |
Left |
Total |
Before |
1x2 = 2 u |
2x2 = 4 u |
3x2 = 6 u
|
Change |
+ 22 |
- 22 |
|
After |
2 u + 22 |
4 u - 22 |
6 u |
Comparing the total number of cartons sold and the total number of cartons at first |
5x1 - 8 = 5 u - 8 |
|
6x1 = 6 u |
The total number of cartons is repeated. Make the total number of cartons the same. LCM of 3 and 6 is 6.
The number of cartons sold in the end is repeated.
5 u - 8 = 2 u + 22
5 u - 2 u = 22 + 8
3 u = 30
1 u = 30 ÷ 3 = 10
Number of cartons left
= 4 u - 22
= 4 x 10 - 22
= 40 - 22
= 18
Answer(s): 18