A drink stall had 160 big and small bottles of orange juice. The number of big bottles is
317 of the number of small bottles. After selling a few small bottles of orange juice, there are
15 as many big bottles as small bottles left. How many small bottles of orange juice were sold?
|
Big bottles |
Small bottles |
Total |
Before |
3 u |
17 u |
20 u |
Change |
|
- 2 u |
|
After |
1x3 = 3 u |
5x3 = 15 u |
|
The number of big bottles remains unchanged. Make the number of big bottles the same. LCM of 3 and 1 is 3.
Number of big bottles at first = 3 u
Number of small bottles at first = 17 u
Total number of bottles at first
= 3 u + 17 u
= 20 u
20 u = 160
1 u = 160 ÷ 20 = 8
Number of small bottles sold
= 17 u - 15 u
= 2 u
= 2 x 8
= 16
Answer(s): 16