In a boutique that sells shirts, 640 gold shirts were sold and 25% of the remaining shirts that were sold were yellow. Of the leftover, 40% of the shirts sold were red shirts and the rest were white shirts. Given that the number of white shirts sold was 5% of the total number of shirts sold, how many yellow and white shirts were sold altogether?
25% =
25100 =
14 40% =
40100 =
25 5% =
5100 =
120
| Gold |
Yellow |
Red |
White |
| 640 |
1x5 |
3x5 |
| |
|
2x3 |
3x3 |
| 19x9 |
1x9 |
| 160 u |
5 u |
6 u |
9 u |
The total number of red and white shirts is the combined repeated identity. Make the total number of red and white shirts the same. LCM of 3 and 5 is 15.
The number of white shirts is repeated. Make the number of white shirts the same. LCM of 9 and 1 is 9.
Number of gold shirts
= 171 u - 5 u - 6 u
= 160 u
160 u = 640
1 u = 640 ÷ 160 = 4
Number of yellow and white shirts
= 5 u + 9 u
= 14 u
= 14 x 4
= 56
Answer(s): 56
