PSLE Warren kept his pink and gold balls in two boxes. The ratio of the number of pink to gold balls in the first box was 3 : 7 and it was 1 : 5 in the second box. The two boxes contained the same number of balls. What fraction of Warren's balls were gold balls?
First box |
Second box |
1x30 30 u |
1x30 30 u |
10x3 |
6x5 |
Pink |
Gold |
Pink |
Gold |
3x3 |
7x3 |
1x5 |
5x5 |
9 u |
21 u |
5 u |
25 u |
The total number of balls in the first box and the second box is the same. Make the total number of balls in each box the same.
LCM of 10 and 6 is 30.
Total number of gold balls
= 21 u + 25 u
= 46 u
Total number of balls
= 30 u + 30 u
= 60 u
Fraction of Warren's balls that were gold balls
=
4660 =
2330 Answer(s):
2330