There were some silver, blue and red staplers in a box.
211 of the staplers were blue. The ratio of the number of silver staplers to the number of red staplers was 4 : 5. There were 327 fewer blue staplers than red staplers.
- Find the ratio of the number of silver staplers to the number of blue staplers to the number of red staplers in the box.
- How many red staplers were there?
Blue |
Silver |
Red |
Total |
2 |
9 |
11 |
|
4 |
5 |
|
2 u |
4 u |
5 u |
11 u |
(a)
Silver : Blue : Red
4 : 2 : 5
(b)
Number of fewer blue staplers than red staplers
= 5 u - 2 u
= 3 u
3 u = 327
1 u = 327 ÷ 3 = 109
Number of red staplers
= 5 u
= 5 x 109
= 545
Answer(s): (a) 4 : 2 : 5; (b) 545