Word Problem - 80

The First interstellar tourist shuttle is ready for departure to the planets Zerbo, Yorx, Greebe, and Blinko. Tourist from all over Earth are waiting to board. They are eager to shop in the stores on the different planets. As they shop they will have to remember that 9 Zerbo dollars have the same value as 3 Yorx dollars; 6 Blinko dollars have the same value as 5 Greebe dollars; and 10 Blinko dollars have the same value as 2 Zerbo dollars. A solar-powered dog polisher on Blinko costs 90 Blinko Dollars. How much would it cost in Yorx dollars and in Greebe Dollars?