In a container, there are some pears and starfruits. If 42 more starfruits are put into the container, the percentage of pears will decrease from 60% to 25%. How many pears are there in the container?
|
Pears |
Starfruits |
Before |
3x1 = 3 u |
2x1 = 2 u |
Change |
No change |
+ 42 |
After |
1x3 = 3 u |
3x3 = 9 u |
60% =
60100 =
35 25% =
25100 =
14 The number of pears remains unchanged at first and in the end. Make the number of pears the same. LCM of 3 and 1 is 3.
Number of starfruits added
= 9 u - 2 u
= 7 u
7 u = 42
1 u = 42 ÷ 7 = 6
Number of pears
= 3 u
= 3 x 6
= 18
Answer(s): 18