]A 10−pound package of cookies costs (y + 1) dollars while a 6−pound package costs (y − 1) dollars. If the price per pound of cookies is the same for both packages, the equation below can be used to solve for y.

All of y plus 1 divided by 10 equals all of y minus 1 divided by 6

What is the value, in dollars, of y? (Do not put a $ in your answer.)

Question

]A 10−pound package of cookies costs (y + 1) dollars while a 6−pound package costs (y − 1) dollars. If the price per pound of cookies is the same for both packages, the equation below can be used to solve for y. 

All of y plus 1 divided by 10 equals all of y minus 1 divided by 6 

What is the value, in dollars, of y? (Do not put a $ in your answer.)

anonymous · Answer

@insanitycat

tkhunny · Answer

The definitions are like this "(y+1) dollars"  See how the "dollars" is listed explicitly?  This means 'y' will not have that unit.  The unit is already supplied.

$\dfrac{(y+1)\;dollars}{$10} = \dfrac{(y-1)\; dollars}{$6}$

$\dfrac{y+1}{10} = \dfrac{y-1}{6}$ -- Observe that $\dfrac{dollars}{$} = 1$ and we can simplify the equation by removing the unnecessary factor.