At a fruit stall, there were 260 lemons and starfruits at first.
14 of the lemons and
18 of the starfruits were sold. In the end, there were same number of lemons and starfruits. How many less starfruits than lemons were sold?
| |
Lemons |
Starfruits |
| Before |
4x7 =
28 u |
8x3 =
24 u |
| Change |
- 1x7 =
- 7 u
|
- 1x3 =
- 3 u
|
| After |
3x7 =
21 u |
7x3 =
21 u |
Comparing lemons
and starfruits in the end |
1x21 =
21 u |
1x21 =
21 u |
The number of lemons and starfruits in the end is the same. Make the number of lemons and starfruits in the end the same. LCM of 3, 7 and 1 is 21.
Number of lemons and starfruits in the end
= 28 u + 24 u
= 52 u
52 u = 260
1 u = 260 ÷ 52 = 5
Number of less starfruits than lemons were sold
= 7 u - 3 u
= 4 u
= 4 x 5
= 20
Answer(s): 20
