The number of apricots Ian bought in September was 30% more than in August. In October, he bought 70% less apricots than in September. If there were 305 less apricots in October than August, how many apricots did Ian buy in September?
| August |
September |
October |
| 10x10 |
13x10 |
|
| |
10x13 |
3x13 |
| 100 u |
130 u |
39 u |
100% + 30 = 130%
130% =
130100 =
1310September : August = 13 : 10
100% - 70% = 30%
30% =
30100 =
310 October : September = 3 : 10
The number of apricots in September is repeated. Make the number of apricots in September is the same. LCM of 13 and 10 is 130.
Number of less apricots in October than August
= 100 u - 39 u
= 61 u
61 u = 305
1 u = 305 ÷ 61 = 5
Number of apricots that Ian bought in September
= 130 u
= 130 x 5
= 650
Answer(s): 650
