Question

Find C and show your working (steps)

\[\frac{C-100}{100}\] = \[\frac{2C-60}{C+60}\]

Answer 1

Multiply both sides by 100(c+60)

Answer 2

solve for C, should be a quadratic

Answer 3

C cannot equal -60, becaue that would mean dividing by 0

Answer 4

\[\frac{C-100}{100} =\frac{2C-60}{C+60}\]Cross multiply.

Answer 5

\[(C-100) (C+60) = (2C-60)(100)\]Solve.

Answer 6

Foo foo give better answer

Answer 7

But still, make sure C=/=-60

Answer 8

First let him solve @inkyvoyd

Answer 9

I mean, ifthe answer comes out as -60, it won't be accurate, because the denominator is never equal to zero.

Answer 10

(c -100)/100 = (2c-60)/ (c+60)

denominator are 100 and c+60
LCM = 100(c+60)

multiply both sides with 100(c-60)
(c-100)(c+60) = (2c-60)(100)

(c-100)(c+60)
=c^2 +60c -100c -6000
=c^2 - 40c -6000

(2c-60)(100)
=200c -6000

(c-100)(c+60) = (2c-60)(100)
c^2 - 40c -6000= 200c -6000
c^2 -40c - 6000 - 200c = 200c -200c-6000
c^2 -240c=0
c(c-240)=0
c=0 or c=240