A box contains some pink, purple and grey mini cupcakes. The ratio of the number of pink mini cupcakes to the number of purple mini cupcakes is 9 : 5. The ratio of the number of purple mini cupcakes to the number of grey mini cupcakes is also 9 : 5. What is the ratio of the number of pink mini cupcakes to the number of grey mini cupcakes in the box?
Pink |
Purple |
Grey |
9x9 |
5x9 |
|
|
9x5 |
5x5 |
81 u |
45 u |
25 u |
The number of purple mini cupcakes is the repeated identity.
LCM of 9 and 5 = 45
Pink mini cupcakes : Grey mini cupcakes
81 : 25
Answer(s): 81 : 25