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Mathematics 20 Online
OpenStudy (anonymous):

THIS IS THE FINAL QUESTION!! In Mr. Brown's class, %80 of the students live more than half a mile from school. Of those students, %80 come to school by public transportation. Of the students using public transportation, %75 take the bus, and %75 of those students buy monthly bus passes. How many students ar in mR. Brown's class??? Please help i need the whole equation but i don't undrestand thank you again for helping me!!!! :] THANK YOU!!!!!!

OpenStudy (anonymous):

@jim_thompson5910 any idea how to solve this??

OpenStudy (anonymous):

PLEASE?

jimthompson5910 (jim_thompson5910):

you're missing information

jimthompson5910 (jim_thompson5910):

I see a whole bunch of percentages, but no actual value of any specific number of people

OpenStudy (anonymous):

this is exactly what it says in my algebra book

jimthompson5910 (jim_thompson5910):

and you're sure all the numbers given are percentages?

OpenStudy (anonymous):

yea

OpenStudy (anonymous):

thats why it's confusing

jimthompson5910 (jim_thompson5910):

yeah usually when I see something like this, they'll give you a number (eg: the number of people who take the bus, buy a month pass etc)

jimthompson5910 (jim_thompson5910):

you would then use that number to find the original total

OpenStudy (anonymous):

ikr im guessing the # of people is 100

jimthompson5910 (jim_thompson5910):

so there's either a typo or you might have missed something

OpenStudy (anonymous):

no

OpenStudy (anonymous):

im looking it over i didnt miss anything

jimthompson5910 (jim_thompson5910):

is it possible to show me the actual problem with a screenshot or camera shot? I want to see it for myself

jimthompson5910 (jim_thompson5910):

alright, well then all I can say is that information is missing

OpenStudy (anonymous):

maybe

jimthompson5910 (jim_thompson5910):

and you should bring it up with your teacher

OpenStudy (anonymous):

ok thank you

jimthompson5910 (jim_thompson5910):

np, sorry I couldn't be of any help

OpenStudy (anonymous):

but hold on 1 sec.

jimthompson5910 (jim_thompson5910):

ok

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

thanks

OpenStudy (anonymous):

sorry blurry

jimthompson5910 (jim_thompson5910):

lol it's mirrored, but i can fix that easily, so no worries

OpenStudy (anonymous):

ok

jimthompson5910 (jim_thompson5910):

ah ah...9 that's what I wanted

jimthompson5910 (jim_thompson5910):

9 students bought month passes

OpenStudy (anonymous):

o ok your smart

jimthompson5910 (jim_thompson5910):

ah ha* not smart enough to not catch that typo lol

jimthompson5910 (jim_thompson5910):

anyways, you first multiply all the percentages given to get _____

jimthompson5910 (jim_thompson5910):

keep in mind that 80% = 0.8 and 75% = 0.75, etc etc

OpenStudy (anonymous):

lol ok i gtg to bed school tomorrow.. bye thank you for the help!!!

jimthompson5910 (jim_thompson5910):

well basically you will have this equation 0.8*0.8*0.75*0.75*x = 9 where x = # of students in the class

OpenStudy (anonymous):

its nerd day tomorrrow

OpenStudy (anonymous):

hahaha

OpenStudy (anonymous):

ok

jimthompson5910 (jim_thompson5910):

so.... 0.36x = 9 x = ???

jimthompson5910 (jim_thompson5910):

nerd day?

OpenStudy (anonymous):

lol yea and x=25 students

jimthompson5910 (jim_thompson5910):

perfect

OpenStudy (anonymous):

haha thanks for all your help

jimthompson5910 (jim_thompson5910):

sure thing

OpenStudy (anonymous):

bye

jimthompson5910 (jim_thompson5910):

bye, have a good night

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