There are thrice as many white skirts as green skirts in a sale. If there are 144 white and green skirts altogether,
- how many white skirts are there?
- how many more white skirts than green skirts?
(a)
Number of green skirts = 1 u
Number of white skirts
= 3 x 1 u
= 3 u
Total number of skirts
= 3 u + 1 u
= 4 u
4 u = 144
1 u = 144 ÷ 4 = 36
Number of white skirts
= 3 u
= 3 x 36
= 108
(b)
Number of more white skirts than green skirts
= 3 u - 1 u
= 2 u
= 2 x 36
= 72
Answer(s): (a) 108; (b) 72