The number of mangosteens Carl bought in June was 40% more than in May. In July, he bought 75% less mangosteens than in June. If there were 78 more mangosteens in May than July, how many mangosteens did Carl buy in May?
| May |
June |
July |
| 5x4 |
7x4 |
|
| |
4x7 |
1x7 |
| 20 u |
28 u |
7 u |
100% + 40 = 140%
140% =
140100 =
75June : May = 7 : 5
100% - 75% = 25%
25% =
25100 =
14 July : June = 1 : 4
The number of mangosteens in June is repeated. Make the number of mangosteens in June is the same. LCM of 7 and 4 is 28.
Number of more mangosteens in May than July
= 20 u - 7 u
= 13 u
13 u = 78
1 u = 78 ÷ 13 = 6
Number of mangosteens that Carl bought in May
= 20 u
= 20 x 6
= 120
Answer(s): 120
