There are thrice as many silver skirts as black skirts in a sale. If there are 108 silver and black skirts altogether,
- how many silver skirts are there?
- how many more silver skirts than black skirts?
(a)
Number of black skirts = 1 u
Number of silver skirts
= 3 x 1 u
= 3 u
Total number of skirts
= 3 u + 1 u
= 4 u
4 u = 108
1 u = 108 ÷ 4 = 27
Number of silver skirts
= 3 u
= 3 x 27
= 81
(b)
Number of more silver skirts than black skirts
= 3 u - 1 u
= 2 u
= 2 x 27
= 54
Answer(s): (a) 81; (b) 54