There was an equal number of mangoes and persimmons. On Tuesday, some mangoes were added, such that the number of mangoes increased by 60%. On Wednesday, the number of mangoes further increased by 50% and the number of persimmons decreased by 30%. There were 136 more mangoes than persimmons in the end. How many mangoes and persimmons were there altogether at first?

	Mangoes	Persimmons
Before	1 u	1 u
Change 1	+ 0.6 u	No change
After 1	1.6 u	1 u
Change 2	+ 0.8 u	- 0.3 u
After 2	2.4 u	0.7 u

Number of mangoes added on Tuesday
= 60% x 1 u
= ⁶⁰₁₀₀ x 1 u
= 0.6 u

Number of mangoes increased on Wednesday
= 50% x 1.6 u
= ⁵⁰₁₀₀ x 1.6 u
= 0.8 u

Number of persimmons decreased on Wednesday
= 30% x 1 u
= ³⁰₁₀₀ x 1 u
= 0.3 u

Number of more mangoes than persimmons in the end
= 2.4 u - 0.7 u
= 1.7 u

1.7 u = 136

1 u = 136 ÷ 1.7 = 80

Total number of mangoes and persimmons at first
= 1 u + 1 u
= 2 u
= 2 x 80
= 160

Answer(s): 160