Question
A box contains some black, gold and silver mochi balls. The ratio of the number of black mochi balls to the number of gold mochi balls is 2 : 9. The ratio of the number of gold mochi balls to the number of silver mochi balls is also 2 : 9. What is the ratio of the number of black mochi balls to the number of silver mochi balls in the box?
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A box contains some black, gold and silver mochi balls. The ratio of the number of black mochi balls to the number of gold mochi balls is 2 : 9. The ratio of the number of gold mochi balls to the number of silver mochi balls is also 2 : 9. What is the ratio of the number of black mochi balls to the number of silver mochi balls in the box?