In a shop, the number of cartons of persimmon juice sold was
15 the number of cartons left. When 47 more cartons were sold, the total number of cartons sold was 8 less than
58 the number of cartons the shop had at first. How many cartons were there at first?
| |
Sold |
Left |
Total |
| Before |
1x4 =
4 u |
5x4 =
20 u |
6x4 =
24 u
|
| Change |
+ 47 |
- 47 |
|
| After |
4 u + 47 |
20 u - 47 |
24 u |
Comparing the total number
of cartons sold and the total
number of cartons at first |
5x3 - 8 =
15 u - 8 |
|
8x3 =
24 u |
The total number of cartons is repeated. Make the total number of cartons the same. LCM of 6 and 8 is 24.
The number of cartons sold in the end is repeated.
15 u - 8 = 4 u + 47
15 u - 4 u = 47 + 8
11 u = 55
1 u = 55 ÷ 11 = 5
Number of cartons at first
= 24 u
= 24 x 5
= 120
Answer(s): 120
