The number of coconuts Liam bought in September was 20% more than in August. In October, he bought 60% less coconuts than in September. If there were 78 less coconuts in October than August, how many coconuts did Liam buy in September?
| August |
September |
October |
| 5x5 |
6x5 |
|
| |
5x6 |
2x6 |
| 25 u |
30 u |
12 u |
100% + 20 = 120%
120% =
120100 =
65September : August = 6 : 5
100% - 60% = 40%
40% =
40100 =
25 October : September = 2 : 5
The number of coconuts in September is repeated. Make the number of coconuts in September is the same. LCM of 6 and 5 is 30.
Number of less coconuts in October than August
= 25 u - 12 u
= 13 u
13 u = 78
1 u = 78 ÷ 13 = 6
Number of coconuts that Liam bought in September
= 30 u
= 30 x 6
= 180
Answer(s): 180
