The ratio of kiwis to mangosteens is 5 : 7. If 126 mangosteens are added, the ratio of kiwis to mangosteens will be 3 : 7. How many kiwis are there?
|
Kiwis |
Mangosteens |
Before |
5x3 = 15 u |
7x3 = 21 u |
Change |
|
+ 126 |
After |
3x5 = 15 u |
7x5 = 35 u |
The number of kiwis at first and in the end remains unchanged. Make the number of kiwis at first and in the end the same. LCM of 5 and 3 is 15.
Number of mangosteens added
= 35 u - 21 u
= 14 u
14 u = 126
1 u = 126 ÷ 14 = 9
Number of kiwis
= 15 u
= 15 x 9
= 135
Answer(s): 135