There are six times as many green coats as black coats in a sale. If there are 105 green and black coats altogether,
- how many green coats are there?
- how many more green coats than black coats?
(a)
Number of black coats = 1 u
Number of green coats
= 6 x 1 u
= 6 u
Total number of coats
= 6 u + 1 u
= 7 u
7 u = 105
1 u = 105 ÷ 7 = 15
Number of green coats
= 6 u
= 6 x 15
= 90
(b)
Number of more green coats than black coats
= 6 u - 1 u
= 5 u
= 5 x 15
= 75
Answer(s): (a) 90; (b) 75