In a kiosk that sells windbreakers, 780 yellow windbreakers were sold and 25% of the remaining windbreakers that were sold were red. Of the leftover, 50% of the windbreakers sold were white windbreakers and the rest were silver windbreakers. Given that the number of silver windbreakers sold was 5% of the total number of windbreakers sold, how many red and yellow windbreakers were sold altogether?
25% = ²⁵₁₀₀ = ¹₄
50% = ⁵⁰₁₀₀ = ¹₂
5% = ⁵₁₀₀ = ¹₂₀

Yellow	Red	White	Silver
780	1x2	3x2
		1x3	1x3
19x3			1x3
52 u	2 u	3 u	3 u

The total number of white and silver shirts is the combined repeated identity. Make the total number of white and silver shirts the same. LCM of 3 and 2 is 6.

The number of silver shirts is repeated. Make the number of silver shirts the same. LCM of 3 and 1 is 3.

Number of yellow windbreakers
= 57 u - 2 u - 3 u
= 52 u

52 u = 780

1 u = 780 ÷ 52 = 15

Number of red and yellow windbreakers
= 2 u + 780
= (2 x 15) + 780
= 30 + 780
= 810

Answer(s): 810