In a container, there are some mangoes and mangosteens. If 15 more mangosteens are put into the container, the percentage of mangoes will decrease from 80% to 40%. How many mangoes are there in the container?
|
Mangoes |
Mangosteens |
Before |
4x1 = 4 u |
1x1 = 1 u |
Change |
No change |
+ 15 |
After |
2x2 = 4 u |
3x2 = 6 u |
80% =
80100 =
45 40% =
40100 =
25 The number of mangoes remains unchanged at first and in the end. Make the number of mangoes the same. LCM of 4 and 2 is 4.
Number of mangosteens added
= 6 u - 1 u
= 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Number of mangoes
= 4 u
= 4 x 3
= 12
Answer(s): 12