A box contains some brown, black and gold chocolate bars. The ratio of the number of brown chocolate bars to the number of black chocolate bars is 9 : 2. The ratio of the number of black chocolate bars to the number of gold chocolate bars is also 9 : 2. What is the ratio of the number of brown chocolate bars to the number of gold chocolate bars in the box?
Brown |
Black |
Gold |
9x9 |
2x9 |
|
|
9x2 |
2x2 |
81 u |
18 u |
4 u |
The number of black chocolate bars is the repeated identity.
LCM of 9 and 2 = 18
Brown chocolate bars : Gold chocolate bars
81 : 4
Answer(s): 81 : 4