PSLE Hazel has a number of staplers in three colours: brown, blue and red.
13 of the staplers are brown. The number of brown staplers is thrice the number of blue staplers. What fraction of the staplers is red?
Brown |
Blue |
Red |
Total |
1x3 |
2x3 |
3x3 |
3x1 |
1x1 |
|
|
3 u |
1 u |
5 u |
9 u |
Number of brown staplers is the repeated identity.
Make the number of brown staplers the same.
LCM of 1 and 3 = 3
Number of red staplers
= 9 u - 3 u - 1 u
= 5 u
Fraction of the staplers that is red
=
59 Answer(s):
59