In a container, there are some lemons and starfruits. If 30 more starfruits are put into the container, the percentage of lemons will decrease from 75% to 30%. How many lemons are there in the container?
|
Lemons |
Starfruits |
Before |
3x1 = 3 u |
1x1 = 1 u |
Change |
No change |
+ 30 |
After |
3x1 = 3 u |
7x1 = 7 u |
75% =
75100 =
34 30% =
30100 =
310 The number of lemons remains unchanged at first and in the end. Make the number of lemons the same. LCM of 3 and 3 is 3.
Number of starfruits added
= 7 u - 1 u
= 6 u
6 u = 30
1 u = 30 ÷ 6 = 5
Number of lemons
= 3 u
= 3 x 5
= 15
Answer(s): 15