maths halp
Started by: Scarecrow | Replies: 5 | Views: 1,220
Scarecrow2Posts: 9,168
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View Profile Okay so i have to come up with a simultaneous equation and then solve it from a worded problem.
Here is the problem:
A shopkeeper sold his entire stock of shirts and ties in a sale for $10000. The shirts were priced at 3 for $100, and the ties were $20 each. If he had sold only half the shirts and two thirds of the ties he would have received $6000. How many ties and shirts did he sell in the sale?
I let:
s = shirts sold, and
t = ties sold.
This is what I came up with; the first two lines are my equations, the rest is how I tried to solve it. I used matrices.
I know the my answer for
t is correct, but
s is definitely wrong.
Can anyone help? Post workings and explanation, please, I want to understand what is going on.
RawGreen2Posts: 2,543
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View Profile I love math, I'll get this done in a minute
First edit:
A shopkeeper sold his entire stock of shirts and ties in a sale for $10000.
The shirts were priced at 3 for $100, and the ties were $20 each.
If he had sold only half the shirts and two thirds of the ties he would have received $6000.
How many ties and shirts did he sell in the sale?
I'm not so sure that 300 ties is what he sold to get the $6,000, you still have to fit the one-half shirts in there. right?
Scarecrow2Posts: 9,168
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View Profile the question is asking:
a) how many ties were sold
b) how many shirts were sold
Scarecrow2Posts: 9,168
Joined: Oct 2005
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View Profile OH, I KNOW WHAT I DID WRONG
I have inadvertently written the equation in a way that the cost of ONE shirt is THREE HUNDRED dollars instead of the cost of THREE shirts being ONE HUNDRED dollars.
Instead of
100(3s) + 20t = 10000
((100(3s))/2) + (2(20t))/3) = 6000
it should be
((100(s))/3) + 20t = 10000
(((100(s))/2)*(1/2)) + (2(20t))/3) = 6000
or
(100s/3) + 20t = 10000
(100s/6) + (40t/3) = 6000
after adjusting the matrix, it returns 120 shirts and 300 ties
:O
<3333333333 AYYG FOR HELPING
ayyg2Posts: 27
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View Profile Lol. You lead me to revisit Stickpage >_>
Slayer2Posts: 2,088
Joined: May 2006
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View Profile I know your problem bro.
His tie prices are way to ****ing high, he'll go out of business quick like.
Also; HOLY WHAT THE FUCCK, AYYG!