Thom worked 18 hours last week at the sporting goods store and earned $92.00. If he continues to earn the same hourly pay, how many additional hours must he work to earn another $138.00?
 anonymous
Thom worked 18 hours last week at the sporting goods store and earned $92.00. If he continues to earn the same hourly pay, how many additional hours must he work to earn another $138.00?
 schrodinger
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 anonymous
can someone please try to help im not good with proportions
 anonymous
Well, if he worked 18 hours, and got payed 92 dollars, how much did he get payed per hour?
 anonymous
The question is how much did he make per hour.... per means to divide
so word for word make per hour means 92 / 18
That would give you 5.11 per hour.
so how many $5.11 are there in $138
138/5.11 27.0058 hours I would assume you would answer 27 hours.
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 anonymous
ok yea that makes sense so just break it down step by step
 anonymous
Yes.
 anonymous
how do i find a proportion for x like this x/6 = 6/4
 anonymous
but its like x is above the 6 and the 6 is above the 4 i guess like cross multiply
 anonymous
Whenever you have a fraction = a fraction you can always cross multiply
(top left times bottom right = bottom left times top right)
x 6
 = 
6 4
so x times 4 = 6 times 6
4x = 36
x = 9
 anonymous
wow thank u i should of typed it like that lol ok so 4x = 36 and x = 9 but is that the answer ?
 anonymous
Yes.. you are wanting to know what x equals and x = 9
 anonymous
ok so i should only get one answer which is x
 anonymous
In other words
9 6
 = 
6 4
if you reduce both of those fractions you get
3

2
 anonymous
ok can u please tell me how to reduce do u just find the factors that go into each numbers
 anonymous
ok im confused im trying to do 9.5/19 and x/30
 anonymous
please can someone help
 anonymous
i did 9.5 times 30 and got 285 but now im stuck
 anonymous
9.5 x
 = 
19 30
30(9.5) = 19x
285 = 19x
x = 15
 anonymous
oh so i do 30 times 9.5 ok sorry i did the oposite
 anonymous
It doesn't matter which way you multiply, you get the same answer.
 anonymous
oh ok yea because i did get 285
 anonymous
At a certain time of day, a tree casts a 9foot shadow at the same time that a person 6 feet tall casts a 4foot shadow. What is the height of the tree?
 anonymous
shadow / height = shadow / height
 anonymous
9 divided by 6 = 1.5 correct
 anonymous
9 6
 = 
x 4
9(4) = 6x
36 = 6x
6 = x
 anonymous
i had to cross mutiply
 anonymous
WAIT I WAS WRONG.
 anonymous
um ok
 anonymous
9 4
 = 
x 6
9(6) = 4x
54 = 4x
16 = x
 anonymous
Shadow of tree Shadow of person
 = 
Height of tree Height of person
 anonymous
ok i understand now so that would mean the answer is 16=x
 anonymous
OR
You can do
Shadow of tree Height of tree
 = 
Shadow of person Height of person
9 x
 = 
4 6
9(6) = 4x
54 = 4x
x = 13.5
 anonymous
I am SO sorry... don't know what is wrong with my math.
They both = 13.5
because 54/4 = 13.5 (I don't know WHERE I got 16)
 anonymous
its ok really everyone makes masteakes
 anonymous
ok so the answer is 13.5
 anonymous
Yes
 anonymous
:) thank you wonderful
 anonymous
U R Welcome
 anonymous
im going to try the next one if i get stuck ill get back to to
 anonymous
x/27 = 4/9 i did x times 9 and i got 9x the i did 9x times 9x and got 81 is that correct
 anonymous
blexting
 anonymous
am i correct blexting
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