A box contains some pink, purple and grey mochi balls. The ratio of the number of pink mochi balls to the number of purple mochi balls is 7 : 2. The ratio of the number of purple mochi balls to the number of grey mochi balls is also 7 : 2. What is the ratio of the number of pink mochi balls to the number of grey mochi balls in the box?
Pink |
Purple |
Grey |
7x7 |
2x7 |
|
|
7x2 |
2x2 |
49 u |
14 u |
4 u |
The number of purple mochi balls is the repeated identity.
LCM of 7 and 2 = 14
Pink mochi balls : Grey mochi balls
49 : 4
Answer(s): 49 : 4