In a stall that sells sweaters, 800 silver sweaters were sold and 50% of the remaining sweaters that were sold were white. Of the leftover, 40% of the sweaters sold were blue sweaters and the rest were yellow sweaters. Given that the number of yellow sweaters sold was 5% of the total number of sweaters sold, how many white and silver sweaters were sold altogether?
50% = ⁵⁰₁₀₀ = ¹₂
40% = ⁴⁰₁₀₀ = ²₅
5% = ⁵₁₀₀ = ¹₂₀

Silver	White	Blue	Yellow
800	1x5	1x5
		2x1	3x1
19x3			1x3
50 u	5 u	2 u	3 u

The total number of blue and yellow shirts is the combined repeated identity. Make the total number of blue and yellow shirts the same. LCM of 1 and 5 is 5.

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

Number of silver sweaters
= 57 u - 5 u - 2 u
= 50 u

50 u = 800

1 u = 800 ÷ 50 = 16

Number of white and silver sweaters
= 5 u + 800
= (5 x 16) + 800
= 80 + 800
= 880

Answer(s): 880