At southside middle school, 40% of the students play an instrument. there are 305 students. how many students play an instrument?

305×0.4=122. 122 students play an instrument

The number of students who play an instrument are:

                          122 students

Step-bystru-step explanation:

It is given that:

At Southside Middle School, 40% of the students play an instrument.

There are 305 students.

The number of students who play an instrument are :

  40% of total students.

i.e. 40% of 305 students

= 0.40×305

=  122 students

Hence, the answer is:  122 students

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm