There was an equal number of starfruits and mangoes. On Monday, some starfruits were added, such that the number of starfruits increased by 80%. On Tuesday, the number of starfruits further increased by 50% and the number of mangoes decreased by 20%. There were 114 more starfruits than mangoes in the end. How many starfruits and mangoes were there altogether at first?

	Starfruits	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	- 0.2 u
After 2	2.7 u	0.8 u

Number of starfruits added on Monday
= 80% x 1 u
= ⁸⁰₁₀₀ x 1 u
= 0.8 u

Number of starfruits increased on Tuesday
= 50% x 1.8 u
= ⁵⁰₁₀₀ x 1.8 u
= 0.9 u

Number of mangoes decreased on Tuesday
= 20% x 1 u
= ²⁰₁₀₀ x 1 u
= 0.2 u

Number of more starfruits than mangoes in the end
= 2.7 u - 0.8 u
= 1.9 u

1.9 u = 114

1 u = 114 ÷ 1.9 = 60

Total number of starfruits and mangoes at first
= 1 u + 1 u
= 2 u
= 2 x 60
= 120

Answer(s): 120