The ratio of chikoos to starfruits is 3 : 5. If 100 starfruits are added, the ratio of chikoos to starfruits will be 1 : 5. How many chikoos are there?
| |
Chikoos |
Starfruits |
| Before |
3x1 =
3 u |
5x1 =
5 u |
| Change |
|
+ 100 |
| After |
1x3 =
3 u |
5x3 =
15 u |
The number of chikoos at first and in the end remains unchanged. Make the number of chikoos at first and in the end the same. LCM of 3 and 1 is 3.
Number of starfruits added
= 15 u - 5 u
= 10 u
10 u = 100
1 u = 100 ÷ 10 = 10
Number of chikoos
= 3 u
= 3 x 10
= 30
Answer(s): 30
