A box contains some purple, grey and brown caramel apples. The ratio of the number of purple caramel apples to the number of grey caramel apples is 3 : 7. The ratio of the number of grey caramel apples to the number of brown caramel apples is also 3 : 7. What is the ratio of the number of purple caramel apples to the number of brown caramel apples in the box?
Purple |
Grey |
Brown |
3x3 |
7x3 |
|
|
3x7 |
7x7 |
9 u |
21 u |
49 u |
The number of grey caramel apples is the repeated identity.
LCM of 3 and 7 = 21
Purple caramel apples : Brown caramel apples
9 : 49
Answer(s): 9 : 49