A drink stall had 117 small and big bottles of orange juice. The number of small bottles is
211 of the number of big bottles. After selling a few big bottles of orange juice, there are
15 as many small bottles as big bottles left. How many big bottles of orange juice were sold?
| |
Small bottles |
Big bottles |
Total |
| Before |
2 u |
11 u |
13 u |
| Change |
|
- 1 u |
|
| After |
1x2 =
2 u |
5x2 =
10 u |
|
The number of small bottles remains unchanged. Make the number of small bottles the same. LCM of 2 and 1 is 2.
Number of small bottles at first = 2 u
Number of big bottles at first = 11 u
Total number of bottles at first
= 2 u + 11 u
= 13 u
13 u = 117
1 u = 117 ÷ 13 = 9
Number of big bottles sold
= 11 u - 10 u
= 1 u
= 9
Answer(s): 9
