Question

The school orchestra has 20 woodwinds, 20 brass instruments, 45 percussionists and 15 strings. Select the portion of the instruments that are brass. Mark all that apply.

Answer 1

20% or 1/5

Step-by-step explanation: add all the instruments together and divide brass by all the instruments 20/100

Answer 2

Find total instruments:

20+20+45+15 = 100

20 are brass

The portion would be number of brass over total:

20/100 which reduces to 1/5 are brass