PSLE A bag contains beads of three different colours.
18 of the beads are orange. The ratio of the number of yellow beads to that of blue beads is 4 : 1. What is the ratio of the number of orange beads to that of blue beads?
Orange |
Yellow |
Blue |
Total |
1x5 |
7x5 |
8x5 |
|
4x7 |
1x7 |
|
5 u |
28 u |
7 u |
40 u |
The total number of blue and yellow beads is the combined repeated identity.
Make the total number blue and yellow beads the same.
LCM of 7 and 5 = 35
Orange : Blue
5 : 7
Answer(s): 5 : 7