A fruit seller sells only chikoos and kiwis. The ratio of chikoos to kiwis is 3 : 5. A total of 189 fruits are added. The number of chikoos becomes 3 times as many as before and the number of kiwis becomes 4 times as many as before. How many fruits are there in the end?

	Comparing chikoos at first and in the end	Chikoos	Kiwis	Comparing kiwis at first and in the end
Before	1x3 = 3 u	3 u	5 u	1x5 = 5 u
Change		+ 189
After	3x3 = 9 u	9 u	20 u	4x5 = 20 u

The number of kiwis at first is repeated.  Make the number of kiwis at first the same.  LCM of 1 and 5 is 5.

The number of chikoos at first is repeated. Make the number of chikoos at first the same. LCM of 1 and 3 is 3.

Number of fruits at first
= 3 u + 5 u
= 8 u

Number of fruits in the end
= 9 u + 20 u
= 29 u

Number of fruits added
= 29 u - 8 u 
= 21 u

21 u = 189

1 u = 189 ÷ 21 = 9

Number of fruits in the end
= 29 u
= 29 x 9
= 261

Answer(s): 261