PSLE Peter kept pencils in boxes K and L. Box K contained thrice as many pencils as box L. In box K,
15 of the pencils were green pencils. In box L,
14 of the pencils were green pencils. What fraction of Peter's pencils were green pencils?
Box K |
Box L |
Total |
3x4x5 |
1x4x5 |
4x4x5 |
G |
Not green |
G |
Not green |
|
1x12 |
4x12 |
1x1x5 |
3x1x5 |
|
12 u |
48 u |
5 u |
15 u |
80 u |
LCM of 5 and 12 is 60.
Number of green pencils
= 12 u + 5 u
= 17 u
Total number of pencils = 80 u
Fraction of Peter's pencils that were green =
1780 Answer(s):
1780