At a market, the ratio of coconuts to oranges was 3 : 11. After Vanessa bought two-fifths of the oranges, there was a total of 480 coconuts and oranges left at the market. How many fruits were there at first?
| |
Coconuts |
Oranges |
Total |
Comparing coconuts
and oranges at first |
3x5 =
15 u |
11x5 =
55 u |
70 u |
Before |
|
5x11 =
55 u |
|
Change |
|
- 2x11 =
- 22 u |
|
After |
15 u |
3x11 =
33 u |
480 |
The number of oranges at first is repeated. Make the number of oranges at first the same. LCM of 11 and 5 is 55.
Total number of fruits left
= 15 u + 33 u
= 48 u
48 u = 480
1 u = 480 ÷ 48 = 10
Number of fruits at first
= 15 u + 55 u
= 70 u
= 70 x 10
= 700
Answer(s): 700
