There was an equal number of chikoos and mangoes. On Saturday, some chikoos were added, such that the number of chikoos increased by 80%. On Sunday, the number of chikoos further increased by 50% and the number of mangoes decreased by 30%. There were 200 more chikoos than mangoes in the end. How many chikoos and mangoes were there altogether at first?

	Chikoos	Mangoes
Before	1 u	1 u
Change 1	+ 0.8 u	No change
After 1	1.8 u	1 u
Change 2	+ 0.9 u	- 0.3 u
After 2	2.7 u	0.7 u

Number of chikoos added on Saturday
= 80% x 1 u
= ⁸⁰₁₀₀ x 1 u
= 0.8 u

Number of chikoos increased on Sunday
= 50% x 1.8 u
= ⁵⁰₁₀₀ x 1.8 u
= 0.9 u

Number of mangoes decreased on Sunday
= 30% x 1 u
= ³⁰₁₀₀ x 1 u
= 0.3 u

Number of more chikoos than mangoes in the end
= 2.7 u - 0.7 u
= 2 u

2 u = 200

1 u = 200 ÷ 2 = 100

Total number of chikoos and mangoes at first
= 1 u + 1 u
= 2 u
= 2 x 100
= 200

Answer(s): 200