A box contains some purple, grey and brown sweets. The ratio of the number of purple sweets to the number of grey sweets is 1 : 3. The ratio of the number of grey sweets to the number of brown sweets is also 1 : 3. What is the ratio of the number of purple sweets to the number of brown sweets in the box?
Purple |
Grey |
Brown |
1x1 |
3x1 |
|
|
1x3 |
3x3 |
1 u |
3 u |
9 u |
The number of grey sweets is the repeated identity.
LCM of 1 and 3 = 3
Purple sweets : Brown sweets
1 : 9
Answer(s): 1 : 9