PSLE Hazel has a number of staplers in three colours: red, brown and purple.
611 of the staplers are red. The number of red staplers is four times the number of brown staplers. What fraction of the staplers is purple?
Red |
Brown |
Purple |
Total |
6x2 |
5x2 |
11x2 |
4x3 |
1x3 |
|
|
12 u |
3 u |
7 u |
22 u |
Number of red staplers is the repeated identity.
Make the number of red staplers the same.
LCM of 6 and 4 = 12
Number of purple staplers
= 22 u - 12 u - 3 u
= 7 u
Fraction of the staplers that is purple
=
722 Answer(s):
722