Question

https://secure.aleks.com/alekscgi/x/math2htgif.exe/NM?%3Fal%7B%3D03%3Flufq%3Dz%3F%2Cal%7B%3D%3E%3Fal%7B%3D66%3Flufq%3Dz%23%28%236%3F%2Cal%7B%3D

Answer 1

youre going to want to cross multiply and work out the quadratic

Answer 2

err, it aint quadratic, its linear ... so its even better

Answer 3

oh ok

Answer 4

thats the usual method tho, cross then solve

another idea tho is this:

\[\frac{30}y=\frac{55}{y+5}\]
\[\frac{y+5}y=\frac{55}{30}\]
\[\frac yy+\frac5y=\frac{55}{30}\]
\[1+\frac5y=\frac{55}{30}\]
\[\frac5y=\frac{55}{30}-\frac{30}{30}\]
\[\frac1y=\frac15(\frac{55}{30}-\frac{30}{30})\]
then flip the results :)

Answer 5

with any luck, y=6

Answer 6

thats right! thanks!

Answer 7

yw