SOLUTION: In Jared’s school, 6 more fourth-graders use blue pens than black. Four times as many fourth-graders use pencils than blue pens. If 5 fourth-graders use black pens, how many four

Algebra ->  Equations -> SOLUTION: In Jared’s school, 6 more fourth-graders use blue pens than black. Four times as many fourth-graders use pencils than blue pens. If 5 fourth-graders use black pens, how many four      Log On


   



Question 916139: In Jared’s school, 6 more fourth-graders use blue pens than black.
Four times as many fourth-graders use pencils than blue pens.
If 5 fourth-graders use black pens, how many fourth-graders use ????missing part of the question???
How to start? where to start? I just need help writing out the equation please

Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
Let L = Blue and B = Black (don't you hate it when they try to confuse you by using the same letter?) and P=pencil
L = B+6 (6 more fourth-graders use blue pens than black.)
B = 5 (If 5 fourth-graders use black pens)
P = 4L(Four times as many fourth-graders use pencils than blue pens.)

If 5 students use black pens, then 11 students use blue pens. 4x as many use pencils, so P = 40