PSLE Flynn kept his yellow and grey buttons in two boxes. The ratio of the number of yellow to grey buttons in the first box was 2 : 3 and it was 2 : 5 in the second box. The two boxes contained the same number of buttons. What fraction of Flynn's buttons were grey buttons?
First box |
Second box |
1x35 35 u |
1x35 35 u |
5x7 |
7x5 |
Yellow |
Grey |
Yellow |
Grey |
2x7 |
3x7 |
2x5 |
5x5 |
14 u |
21 u |
10 u |
25 u |
The total number of buttons in the first box and the second box is the same. Make the total number of buttons in each box the same.
LCM of 5 and 7 is 35.
Total number of grey buttons
= 21 u + 25 u
= 46 u
Total number of buttons
= 35 u + 35 u
= 70 u
Fraction of Flynn's buttons that were grey buttons
=
4670 =
2335 Answer(s):
2335