PSLE Risa has a number of staplers in three colours: red, yellow and purple.
712 of the staplers are red. The number of red staplers is four times the number of yellow staplers. What fraction of the staplers is purple?
Red |
Yellow |
Purple |
Total |
7x4 |
5x4 |
12x4 |
4x7 |
1x7 |
|
|
28 u |
7 u |
13 u |
48 u |
Number of red staplers is the repeated identity.
Make the number of red staplers the same.
LCM of 7 and 4 = 28
Number of purple staplers
= 48 u - 28 u - 7 u
= 13 u
Fraction of the staplers that is purple
=
1348 Answer(s):
1348