PSLE Winnie has a number of staplers in three colours: brown, orange and yellow.
310 of the staplers are brown. The number of brown staplers is twice the number of orange staplers. What fraction of the staplers is yellow?
Brown |
Orange |
Yellow |
Total |
3x2 |
7x2 |
10x2 |
2x3 |
1x3 |
|
|
6 u |
3 u |
11 u |
20 u |
Number of brown staplers is the repeated identity.
Make the number of brown staplers the same.
LCM of 3 and 2 = 6
Number of yellow staplers
= 20 u - 6 u - 3 u
= 11 u
Fraction of the staplers that is yellow
=
1120 Answer(s):
1120