PSLE Neave kept his green and pink coins in two boxes. The ratio of the number of green to pink coins in the first box was 1 : 2 and it was 1 : 6 in the second box. The two boxes contained the same number of coins. What fraction of Neave's coins were pink coins?
First box |
Second box |
1x21 21 u |
1x21 21 u |
3x7 |
7x3 |
Green |
Pink |
Green |
Pink |
1x7 |
2x7 |
1x3 |
6x3 |
7 u |
14 u |
3 u |
18 u |
The total number of coins in the first box and the second box is the same. Make the total number of coins in each box the same.
LCM of 3 and 7 is 21.
Total number of pink coins
= 14 u + 18 u
= 32 u
Total number of coins
= 21 u + 21 u
= 42 u
Fraction of Neave's coins that were pink coins
=
3242 =
1621 Answer(s):
1621