There were some blue, red and green staplers in a box.
111 of the staplers were red. The ratio of the number of blue staplers to the number of green staplers was 3 : 7. There were 294 fewer red staplers than green staplers.
- Find the ratio of the number of blue staplers to the number of red staplers to the number of green staplers in the box.
- How many green staplers were there?
Red |
Blue |
Green |
Total |
1 |
10 |
11 |
|
3 |
7 |
|
1 u |
3 u |
7 u |
11 u |
(a)
Blue : Red : Green
3 : 1 : 7
(b)
Number of fewer red staplers than green staplers
= 7 u - 1 u
= 6 u
6 u = 294
1 u = 294 ÷ 6 = 49
Number of green staplers
= 7 u
= 7 x 49
= 343
Answer(s): (a) 3 : 1 : 7; (b) 343