There are five times as many blue skirts as grey skirts in a sale. If there are 120 blue and grey skirts altogether,
- how many blue skirts are there?
- how many more blue skirts than grey skirts?
(a)
Number of grey skirts = 1 u
Number of blue skirts
= 5 x 1 u
= 5 u
Total number of skirts
= 5 u + 1 u
= 6 u
6 u = 120
1 u = 120 ÷ 6 = 20
Number of blue skirts
= 5 u
= 5 x 20
= 100
(b)
Number of more blue skirts than grey skirts
= 5 u - 1 u
= 4 u
= 4 x 20
= 80
Answer(s): (a) 100; (b) 80