The ratio of chikoos to dragonfruits is 5 : 7. If 117 dragonfruits are added, the ratio of chikoos to dragonfruits will be 1 : 4. How many chikoos are there?
| |
Chikoos |
Dragonfruits |
| Before |
5x1 =
5 u |
7x1 =
7 u |
| Change |
|
+ 117 |
| After |
1x5 =
5 u |
4x5 =
20 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 5 and 1 is 5.
Number of dragonfruits added
= 20 u - 7 u
= 13 u
13 u = 117
1 u = 117 ÷ 13 = 9
Number of chikoos
= 5 u
= 5 x 9
= 45
Answer(s): 45
