Ian had lemons and oranges. The ratio of lemons to oranges was 4 : 3. After
45 of the lemons and 112 oranges were sold, there were 4 times as many lemons as oranges left. How many lemons and oranges were sold?
| |
Lemons |
Oranges |
Comparing lemons
and oranges at first |
4x5 =
20 u |
3x5 =
15 u |
| Before |
5x4 =
20 u |
|
| Change |
- 4x4 =
- 16 u |
- 112 |
| After |
1x4 =
4 u |
|
Comparing lemons
and oranges in the end |
4 u |
1 u |
The number of lemons at first is repeated. Make the number of lemons at first the same. LCM of 4 and 5 is 20.
Number of oranges sold
= 15 u - 1 u
= 14 u
14 u = 112
1 u = 112 ÷ 14 = 8
Number of lemons and oranges sold
= 16 u + 112
= 16 x 8 + 112
= 128 + 112
= 240
Answer(s): 240
