A box contains some brown, black and gold mochi balls. The ratio of the number of brown mochi balls to the number of black mochi balls is 9 : 4. The ratio of the number of black mochi balls to the number of gold mochi balls is also 9 : 4. What is the ratio of the number of brown mochi balls to the number of gold mochi balls in the box?
Brown |
Black |
Gold |
9x9 |
4x9 |
|
|
9x4 |
4x4 |
81 u |
36 u |
16 u |
The number of black mochi balls is the repeated identity.
LCM of 9 and 4 = 36
Brown mochi balls : Gold mochi balls
81 : 16
Answer(s): 81 : 16