There were some white, pink and purple staplers in a box.
112 of the staplers were pink. The ratio of the number of white staplers to the number of purple staplers was 4 : 7. There were 336 fewer pink staplers than purple staplers.
- Find the ratio of the number of white staplers to the number of pink staplers to the number of purple staplers in the box.
- How many purple staplers were there?
Pink |
White |
Purple |
Total |
1 |
11 |
12 |
|
4 |
7 |
|
1 u |
4 u |
7 u |
12 u |
(a)
White : Pink : Purple
4 : 1 : 7
(b)
Number of fewer pink staplers than purple staplers
= 7 u - 1 u
= 6 u
6 u = 336
1 u = 336 ÷ 6 = 56
Number of purple staplers
= 7 u
= 7 x 56
= 392
Answer(s): (a) 4 : 1 : 7; (b) 392