Answer :
As we are dealing only with the tubas which are part of the brass section we can ignore the percussion and woodwind for this question.
2/5 of 240 = 2/5 x 240 = 96 brass instruments
2/5 of 96 = 2/5 x 96 = 38.4 tuba players
I suspect that the question may be wrong!
2/5 of 240 = 2/5 x 240 = 96 brass instruments
2/5 of 96 = 2/5 x 96 = 38.4 tuba players
I suspect that the question may be wrong!