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The given ratio is 5 trumpet players : 2 tuba players.
A. Since the ratio is 5:2, at the smallest ratio there would be 7 players total (5+2). So tuba players would be 2/7, not 2/5.
B. If there are 7 total players, and the ratio is 5 trumpets : 2 tubas, then trumpets are in fact 2.5 times the number of tuba players (2 tubas *2.5 = 5 trumpets).
C. The ratio is 5 trumpet players : 2 tuba players, not 2 trumpet players for every 5 tuba players.
D. The ratio of tubas to total number of tubas and trumpets is
A. Since the ratio is 5:2, at the smallest ratio there would be 7 players total (5+2). So tuba players would be 2/7, not 2/5.
B. If there are 7 total players, and the ratio is 5 trumpets : 2 tubas, then trumpets are in fact 2.5 times the number of tuba players (2 tubas *2.5 = 5 trumpets).
C. The ratio is 5 trumpet players : 2 tuba players, not 2 trumpet players for every 5 tuba players.
D. The ratio of tubas to total number of tubas and trumpets is