Question

40 percent of the students at rockledge middle school are musicians. 75 percent of those musicians have to read a sheet music when they play instruments. If 38 of the students can play their instruments whithout reading sheet music, how many students are there at rockledge middle school?

Answer 1

Explanation:

40/100 musicians .75*40= 30

30 is to 100

as 38 is to x

30 38

---- = ------ Cross multiply

100 x

30x=3800

divide by three to get

126 and 2/3

you can't split people, so it would be closer to about 127 students.