The ratio of chikoos to dragonfruits is 2 : 5. If 78 dragonfruits are added, the ratio of chikoos to dragonfruits will be 1 : 9. How many chikoos are there?
| |
Chikoos |
Dragonfruits |
| Before |
2x1 =
2 u |
5x1 =
5 u |
| Change |
|
+ 78 |
| After |
1x2 =
2 u |
9x2 =
18 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 2 and 1 is 2.
Number of dragonfruits added
= 18 u - 5 u
= 13 u
13 u = 78
1 u = 78 ÷ 13 = 6
Number of chikoos
= 2 u
= 2 x 6
= 12
Answer(s): 12
