The number of dates Ben bought in March was 40% more than in February. In April, he bought 50% less dates than in March. If there were 21 more dates in February than April, how many dates did Ben buy in February?
| February |
March |
April |
| 5x2 |
7x2 |
|
| |
2x7 |
1x7 |
| 10 u |
14 u |
7 u |
100% + 40 = 140%
140% =
140100 =
75March : February = 7 : 5
100% - 50% = 50%
50% =
50100 =
12 April : March = 1 : 2
The number of dates in March is repeated. Make the number of dates in March is the same. LCM of 7 and 2 is 14.
Number of more dates in February than April
= 10 u - 7 u
= 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Number of dates that Ben bought in February
= 10 u
= 10 x 7
= 70
Answer(s): 70
