The boys changed stamps, beads and balls. For 9 balls is 3 stamps, 2 balls is 44 stamps. How many beads is for 1 ball?

Correct result:

x =  66


9a=3b 2c=44b  b=9/3a 2c=44b=44/39a  x=c/a=44/39/2=44392 x=66

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