At a mart, the ratio of apricots to mandarin oranges was 7 : 9. After Victoria bought four-fifths of the mandarin oranges, there was a total of 528 apricots and mandarin oranges left at the mart. How many fruits were there at first?
| |
Apricots |
Mandarin Oranges |
Total |
Comparing apricots
and mandarin oranges at first |
7x5 =
35 u |
9x5 =
45 u |
80 u |
Before |
|
5x9 =
45 u |
|
Change |
|
- 4x9 =
- 36 u |
|
After |
35 u |
1x9 =
9 u |
528 |
The number of mandarin oranges at first is repeated. Make the number of mandarin oranges at first the same. LCM of 9 and 5 is 45.
Total number of fruits left
= 35 u + 9 u
= 44 u
44 u = 528
1 u = 528 ÷ 44 = 12
Number of fruits at first
= 35 u + 45 u
= 80 u
= 80 x 12
= 960
Answer(s): 960
