The number of apples Tim bought in October was 30% more than in September. In November, he bought 50% less apples than in October. If there were 42 more apples in September than November, how many apples did Tim buy in September?
| September |
October |
November |
| 10x2 |
13x2 |
|
| |
2x13 |
1x13 |
| 20 u |
26 u |
13 u |
100% + 30 = 130%
130% =
130100 =
1310October : September = 13 : 10
100% - 50% = 50%
50% =
50100 =
12 November : October = 1 : 2
The number of apples in October is repeated. Make the number of apples in October is the same. LCM of 13 and 2 is 26.
Number of more apples in September than November
= 20 u - 13 u
= 7 u
7 u = 42
1 u = 42 ÷ 7 = 6
Number of apples that Tim bought in September
= 20 u
= 20 x 6
= 120
Answer(s): 120
