There were some yellow, white and pink markers in a box.
112 of the markers were white. The ratio of the number of yellow markers to the number of pink markers was 4 : 7. There were 318 fewer white markers than pink markers.
- Find the ratio of the number of yellow markers to the number of white markers to the number of pink markers in the box.
- How many pink markers were there?
White |
Yellow |
Pink |
Total |
1 |
11 |
12 |
|
4 |
7 |
|
1 u |
4 u |
7 u |
12 u |
(a)
Yellow : White : Pink
4 : 1 : 7
(b)
Number of fewer white markers than pink markers
= 7 u - 1 u
= 6 u
6 u = 318
1 u = 318 ÷ 6 = 53
Number of pink markers
= 7 u
= 7 x 53
= 371
Answer(s): (a) 4 : 1 : 7; (b) 371