Five-crowns 4655

Martin has metal coins saved up in the cash box. Crowns, two-crowns, and five-crowns. The ratio of crowns to five-crowns is 7:4, and five-crowns to two-crowns is 2:9. What is the ratio of crowns and double crowns?

Correct answer:

p =  7/18

Step-by-step explanation:

p=7/(2 9)=187=0.3889



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