There are four times as many red coats as blue coats in a sale. If there are 145 red and blue coats altogether,
- how many red coats are there?
- how many more red coats than blue coats?
(a)
Number of blue coats = 1 u
Number of red coats
= 4 x 1 u
= 4 u
Total number of coats
= 4 u + 1 u
= 5 u
5 u = 145
1 u = 145 ÷ 5 = 29
Number of red coats
= 4 u
= 4 x 29
= 116
(b)
Number of more red coats than blue coats
= 4 u - 1 u
= 3 u
= 3 x 29
= 87
Answer(s): (a) 116; (b) 87