There was an equal number of peaches and lemons. On Tuesday, some peaches were added, such that the number of peaches increased by 80%. On Wednesday, the number of peaches further increased by 50% and the number of lemons decreased by 10%. There were 144 more peaches than lemons in the end. How many peaches and lemons were there altogether at first?

	Peaches	Lemons
Before	1 u	1 u
Change 1	+ 0.8 u	No change
After 1	1.8 u	1 u
Change 2	+ 0.9 u	- 0.1 u
After 2	2.7 u	0.9 u

Number of peaches added on Tuesday
= 80% x 1 u
= ⁸⁰₁₀₀ x 1 u
= 0.8 u

Number of peaches increased on Wednesday
= 50% x 1.8 u
= ⁵⁰₁₀₀ x 1.8 u
= 0.9 u

Number of lemons decreased on Wednesday
= 10% x 1 u
= ¹⁰₁₀₀ x 1 u
= 0.1 u

Number of more peaches than lemons in the end
= 2.7 u - 0.9 u
= 1.8 u

1.8 u = 144

1 u = 144 ÷ 1.8 = 80

Total number of peaches and lemons at first
= 1 u + 1 u
= 2 u
= 2 x 80
= 160

Answer(s): 160