The number of plums Carl bought in March was 40% more than in February. In April, he bought 70% less plums than in March. If there were 261 less plums in April than February, how many plums did Carl buy in March?
| February |
March |
April |
| 5x10 |
7x10 |
|
| |
10x7 |
3x7 |
| 50 u |
70 u |
21 u |
100% + 40 = 140%
140% =
140100 =
75March : February = 7 : 5
100% - 70% = 30%
30% =
30100 =
310 April : March = 3 : 10
The number of plums in March is repeated. Make the number of plums in March is the same. LCM of 7 and 10 is 70.
Number of less plums in April than February
= 50 u - 21 u
= 29 u
29 u = 261
1 u = 261 ÷ 29 = 9
Number of plums that Carl bought in March
= 70 u
= 70 x 9
= 630
Answer(s): 630
