algebra

Last year, one fourth of the students in your class played an ninstrument.
This year,
6
students
joined
the
class.
Four
of the
new
students
play
an
instrument.
Now,
one
third
of
the
students
play
an
instrument.
How
many
students
are in
your
class
now

18, 24, 30, or 48?

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  1. Original number of students = x
    original number playing = x/4

    this year:
    number of students = x+6
    number playing = x/4 + 4

    x/4 + 4 = (1/3)(x+6)
    times 12
    3x + 48 = 4x + 24
    -x = -24
    x = 24

    So now there are x+6 or 30 students in the class

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    posted by Reiny
  2. Thank you so much!

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  3. KOWALSKI, ANALASIYSSFJSIOJF.

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