At a supermarket, the ratio of avocados to lemons was 5 : 12. After Gabby bought two-fifths of the lemons, there was a total of 549 avocados and lemons left at the supermarket. How many fruits were there at first?
| |
Avocados |
Lemons |
Total |
Comparing avocados
and lemons at first |
5x5 =
25 u |
12x5 =
60 u |
85 u |
Before |
|
5x12 =
60 u |
|
Change |
|
- 2x12 =
- 24 u |
|
After |
25 u |
3x12 =
36 u |
549 |
The number of lemons at first is repeated. Make the number of lemons at first the same. LCM of 12 and 5 is 60.
Total number of fruits left
= 25 u + 36 u
= 61 u
61 u = 549
1 u = 549 ÷ 61 = 9
Number of fruits at first
= 25 u + 60 u
= 85 u
= 85 x 9
= 765
Answer(s): 765
