q=7620/(11760/q)-4.20))

Algebra
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need an answer to the question above

May 11th, 2015

q=7620/((11760/q)-4.20)

q=7620/((11760-4.20q)/q)=7620q/(11760-4.20q)

q*(11760-4.20q)=7620q

11760q-4.20q^2=7620q

-4.20q^2+4140q=0

q(-4.20q+4140)=0

q=0 and -4.20q+4140=0    q=985.7

but q=0 has no sense

answer is q=985.7

May 11th, 2015

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