There were some red, green and yellow markers in a box.
19 of the markers were green. The ratio of the number of red markers to the number of yellow markers was 3 : 5. There were 260 fewer green markers than yellow markers.
- Find the ratio of the number of red markers to the number of green markers to the number of yellow markers in the box.
- How many yellow markers were there?
Green |
Red |
Yellow |
Total |
1 |
8 |
9 |
|
3 |
5 |
|
1 u |
3 u |
5 u |
9 u |
(a)
Red : Green : Yellow
3 : 1 : 5
(b)
Number of fewer green markers than yellow markers
= 5 u - 1 u
= 4 u
4 u = 260
1 u = 260 ÷ 4 = 65
Number of yellow markers
= 5 u
= 5 x 65
= 325
Answer(s): (a) 3 : 1 : 5; (b) 325