The number of avocados Mark bought in February was 30% more than in January. In March, he bought 70% less avocados than in February. If there were 183 less avocados in March than January, how many avocados did Mark buy in February?
| January |
February |
March |
| 10x10 |
13x10 |
|
| |
10x13 |
3x13 |
| 100 u |
130 u |
39 u |
100% + 30 = 130%
130% =
130100 =
1310February : January = 13 : 10
100% - 70% = 30%
30% =
30100 =
310 March : February = 3 : 10
The number of avocados in February is repeated. Make the number of avocados in February is the same. LCM of 13 and 10 is 130.
Number of less avocados in March than January
= 100 u - 39 u
= 61 u
61 u = 183
1 u = 183 ÷ 61 = 3
Number of avocados that Mark bought in February
= 130 u
= 130 x 3
= 390
Answer(s): 390
