PSLE Gillian has a number of staplers in three colours: green, red and orange.
57 of the staplers are green. The number of green staplers is four times the number of red staplers. What fraction of the staplers is orange?
Green |
Red |
Orange |
Total |
5x4 |
2x4 |
7x4 |
4x5 |
1x5 |
|
|
20 u |
5 u |
3 u |
28 u |
Number of green staplers is the repeated identity.
Make the number of green staplers the same.
LCM of 5 and 4 = 20
Number of orange staplers
= 28 u - 20 u - 5 u
= 3 u
Fraction of the staplers that is orange
=
328 Answer(s):
328