A person goes to the store and buys 12 lemons, if they order 10 lemonades, and the lemonade is each 5.7 ounces, how many lemonades can be made?

Question

iwanttogotostanford · Answer

@Cardinal_Carlo

iwanttogotostanford · Answer

@Cardinal_Carlo

anonymous · Answer

$$\frac{ 4 }{ 5 } + \frac{ 3 }{ x } = \frac{ 1 }{ 2 }$$
Unsolvable? Quite the contrary, George.
$$\frac{ 3 }{ x } = \frac{ 1 }{ 2 } - \frac{ 4 }{ 5 }$$
$$\frac{ 3 }{ x } = \frac{ 1(5) - 4(2) }{ 2(5) } = \frac{ 5 - 8 }{ 10 } = \frac{ -3 }{ 10 } $$
$$\frac{ 3 }{ x } = \frac{ -3 }{ 10 }$$
$$3\left( \frac{ 10 }{ -3 } \right) = x$$
$$-10 = x$$
As we can see, x = -10. George's conclusion was false because he had already assumed that x = 0.

iwanttogotostanford · Answer

oh wow, ok thank you! I get it now as my teacher did NOT explain very well.. sigh

anonymous · Answer

You're welcome ^_^

Note: I understand the sentiment. Sadly, you'll continue to have professors at higher education that don't explain too well.

iwanttogotostanford · Answer

@Cardinal_Carlo I wil be having a couple more that I need explaining on if you're up for it!:-)

anonymous · Answer

Just post them on another thread, and we'll tackle it.

iwanttogotostanford · Answer

ok thank you

anonymous · Answer

Don't forget to close this one!