PSLE Asher kept pens in boxes R and S. Box R contained four times as many pens as box S. In box R,
15 of the pens were yellow pens. In box S,
14 of the pens were yellow pens. What fraction of Asher's pens were yellow pens?
Box R |
Box S |
Total |
4x4x5 |
1x4x5 |
5x4x5 |
Y |
Not yellow |
Y |
Not yellow |
|
1x16 |
4x16 |
1x1x5 |
3x1x5 |
|
16 u |
64 u |
5 u |
15 u |
100 u |
LCM of 5 and 16 is 80.
Number of yellow pens
= 16 u + 5 u
= 21 u
Total number of pens = 100 u
Fraction of Asher's pens that were yellow =
21100 Answer(s):
21100