PSLE Brandon kept his blue and red stars in two boxes. The ratio of the number of blue to red stars in the first box was 1 : 10 and it was 1 : 2 in the second box. The two boxes contained the same number of stars. What fraction of Brandon's stars were red stars?
First box |
Second box |
1x33 33 u |
1x33 33 u |
11x3 |
3x11 |
Blue |
Red |
Blue |
Red |
1x3 |
10x3 |
1x11 |
2x11 |
3 u |
30 u |
11 u |
22 u |
The total number of stars in the first box and the second box is the same. Make the total number of stars in each box the same.
LCM of 11 and 3 is 33.
Total number of red stars
= 30 u + 22 u
= 52 u
Total number of stars
= 33 u + 33 u
= 66 u
Fraction of Brandon's stars that were red stars
=
5266 =
2633 Answer(s):
2633