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