MATH question

Discus: SAT/ACT Tests and Test Preparation: October 2003 Archive: MATH question
 By Akaflex (Akaflex) on Wednesday, October 01, 2003 - 04:31 pm: Edit

Concentration of Radios in 5 Countries

A /500 Million /200
B /150 Mil. / 50
C / 75 Mil. / 75
D /40 Mil. / 8
E /20 Mil. /100

According to the table which of the give countries has the largest population?

Can sum1 explain PELASE

 By Fairyofwind (Fairyofwind) on Wednesday, October 01, 2003 - 04:34 pm: Edit

This isn't math. This reminds me of the study skills portion of the CTBS test. Let's take a nice little table with some cheesy empirical data and pass it off at math.

 By Geniusash (Geniusash) on Wednesday, October 01, 2003 - 04:36 pm: Edit

set it up this way
(x # of people)/(number of total radios)=(# of radios per 100 people)/100 people

 By Gabypa (Gabypa) on Wednesday, October 01, 2003 - 05:51 pm: Edit

Clearly, it's D.

 By Akaflex (Akaflex) on Thursday, October 02, 2003 - 03:34 pm: Edit

i stil dun c it i used the thing genius gave me but that doest give me D

 By Neo (Neo) on Thursday, October 02, 2003 - 04:20 pm: Edit

Multiply the number of radios in each country by 100/(the number of radios per 100 people).

For example, Country A has 500 million radios, and 200 radios per 100 people. That means, there are twice as many radios as people in that country (or that each person, on avg. has two radios). Either way, multiply 500 x 100/200.

A has a pop. of 250 million.

D is correct because 40 mil x 100/8 gives the largest value. 40 x 25/2 = 400+100 = 500 million.