## A concept/question/ SOMETHING thats gettin me

Prepare for the LSAT or discuss it with others in this forum.
sangr

Posts: 459
Joined: Sun Jun 07, 2009 4:45 pm

### A concept/question/ SOMETHING thats gettin me

ok so a stimulus states that
in country a, within a certain time period, total coal usage increased less than 10 percent.
however, a certain type of coal usage, lets say coal type A, went up by more than 50 percent.

thus the answer is that, proportion of coal type A increased, amongst TOTAL coal.

ok so thats a relatively simple concept but im just wondering.

what if TOTAL coal type usage was something 50 billion, in absolute pounds.
and coal type A usage was something like .1

ok so taking this into consideration, lets say the 50 billion total was increased less than 10 percent.
and the coal type A usage was raised by 50%, or .15

then does this, even in these ridiculous terms, constitute that the coal type A constitutes more of coal usage than it did before?
or am i not understanding this correctly? i tried many numbers that are big, and everytime i tried it was indeed true that coal type A did constitute more..but DAMN if it is then isnt this a math question in many ways?

ConMan345

Posts: 577
Joined: Tue Sep 29, 2009 1:08 pm

### Re: A concept/question/ SOMETHING thats gettin me

sangr wrote:ok so a stimulus states that
in country a, within a certain time period, total coal usage increased less than 10 percent.
however, a certain type of coal usage, lets say coal type A, went up by more than 50 percent.

thus the answer is that, proportion of coal type A increased, amongst TOTAL coal.

ok so thats a relatively simple concept but im just wondering.

what if TOTAL coal type usage was something 50 billion, in absolute pounds.
and coal type A usage was something like .1

ok so taking this into consideration, lets say the 50 billion total was increased less than 10 percent.
and the coal type A usage was raised by 50%, or .15

then does this, even in these ridiculous terms, constitute that the coal type A constitutes more of coal usage than it did before?
or am i not understanding this correctly? i tried many numbers that are big, and everytime i tried it was indeed true that coal type A did constitute more..but DAMN if it is then isnt this a math question in many ways?

If a part increases more than the rest, it's going to gain a greater portion of the whole.

ConMan345

Posts: 577
Joined: Tue Sep 29, 2009 1:08 pm

### Re: A concept/question/ SOMETHING thats gettin me

Also, yes, the LSAT is full of statistically-based inferences.

sangr

Posts: 459
Joined: Sun Jun 07, 2009 4:45 pm

### Re: A concept/question/ SOMETHING thats gettin me

ConMan345 wrote:
sangr wrote:

If a part increases more than the rest, it's going to gain a greater portion of the whole.

I see, thanks. That clears everything up perfectly, worded in those terms.

ConMan345

Posts: 577
Joined: Tue Sep 29, 2009 1:08 pm

### Re: A concept/question/ SOMETHING thats gettin me

You're very welcome. Glad I could help