A box contains some blue, red and green chocolate bars. The ratio of the number of blue chocolate bars to the number of red chocolate bars is 2 : 9. The ratio of the number of red chocolate bars to the number of green chocolate bars is also 2 : 9. What is the ratio of the number of blue chocolate bars to the number of green chocolate bars in the box?
Blue |
Red |
Green |
2x2 |
9x2 |
|
|
2x9 |
9x9 |
4 u |
18 u |
81 u |
The number of red chocolate bars is the repeated identity.
LCM of 2 and 9 = 18
Blue chocolate bars : Green chocolate bars
4 : 81
Answer(s): 4 : 81