PSLE Sean kept markers in boxes R and S. Box R contained thrice as many markers as box S. In box R,
15 of the markers were orange markers. In box S,
14 of the markers were orange markers. What fraction of Sean's markers were orange markers?
Box R |
Box S |
Total |
3x4x5 |
1x4x5 |
4x4x5 |
O |
Not orange |
O |
Not orange |
|
1x12 |
4x12 |
1x1x5 |
3x1x5 |
|
12 u |
48 u |
5 u |
15 u |
80 u |
LCM of 5 and 12 is 60.
Number of orange markers
= 12 u + 5 u
= 17 u
Total number of markers = 80 u
Fraction of Sean's markers that were orange =
1780 Answer(s):
1780