A drink stall had 80 big and small packets of orange juice. The number of big packets is
317 of the number of small packets. After selling a few small packets of orange juice, there are
15 as many big packets as small packets left. How many small packets of orange juice were sold?
| |
Big packets |
Small packets |
Total |
| Before |
3 u |
17 u |
20 u |
| Change |
|
- 2 u |
|
| After |
1x3 =
3 u |
5x3 =
15 u |
|
The number of big packets remains unchanged. Make the number of big packets the same. LCM of 3 and 1 is 3.
Number of big packets at first = 3 u
Number of small packets at first = 17 u
Total number of packets at first
= 3 u + 17 u
= 20 u
20 u = 80
1 u = 80 ÷ 20 = 4
Number of small packets sold
= 17 u - 15 u
= 2 u
= 2 x 4
= 8
Answer(s): 8
