PSLE Wendy has a number of staplers in three colours: blue, brown and green.
47 of the staplers are blue. The number of blue staplers is thrice the number of brown staplers. What fraction of the staplers is green?
Blue |
Brown |
Green |
Total |
4x3 |
3x3 |
7x3 |
3x4 |
1x4 |
|
|
12 u |
4 u |
5 u |
21 u |
Number of blue staplers is the repeated identity.
Make the number of blue staplers the same.
LCM of 4 and 3 = 12
Number of green staplers
= 21 u - 12 u - 4 u
= 5 u
Fraction of the staplers that is green
=
521 Answer(s):
521