A box contains some red, green and yellow chocolate bars. The ratio of the number of red chocolate bars to the number of green chocolate bars is 3 : 5. The ratio of the number of green chocolate bars to the number of yellow chocolate bars is also 3 : 5. What is the ratio of the number of red chocolate bars to the number of yellow chocolate bars in the box?
Red |
Green |
Yellow |
3x3 |
5x3 |
|
|
3x5 |
5x5 |
9 u |
15 u |
25 u |
The number of green chocolate bars is the repeated identity.
LCM of 3 and 5 = 15
Red chocolate bars : Yellow chocolate bars
9 : 25
Answer(s): 9 : 25