There are thrice as many pink coats as grey coats in a sale. If there are 120 pink and grey coats altogether,
- how many pink coats are there?
- how many more pink coats than grey coats?
(a)
Number of grey coats = 1 u
Number of pink coats
= 3 x 1 u
= 3 u
Total number of coats
= 3 u + 1 u
= 4 u
4 u = 120
1 u = 120 ÷ 4 = 30
Number of pink coats
= 3 u
= 3 x 30
= 90
(b)
Number of more pink coats than grey coats
= 3 u - 1 u
= 2 u
= 2 x 30
= 60
Answer(s): (a) 90; (b) 60