A drink stall had 95 small and big bottles of tea. The number of small bottles is
316 of the number of big bottles. After selling a few big bottles of tea, there are
15 as many small bottles as big bottles left. How many big bottles of tea were sold?
| |
Small bottles |
Big bottles |
Total |
| Before |
3 u |
16 u |
19 u |
| Change |
|
- 1 u |
|
| After |
1x3 =
3 u |
5x3 =
15 u |
|
The number of small bottles remains unchanged. Make the number of small bottles the same. LCM of 3 and 1 is 3.
Number of small bottles at first = 3 u
Number of big bottles at first = 16 u
Total number of bottles at first
= 3 u + 16 u
= 19 u
19 u = 95
1 u = 95 ÷ 19 = 5
Number of big bottles sold
= 16 u - 15 u
= 1 u
= 5
Answer(s): 5
