Leonardo will pay $484 to three different credit cards: Expert Card, Passport, and US Speedy. He will pay four times as much to Expert Card as US Speedy since it has a higher balance. He also expects the Passport payment to be only 10% of the total of the other two payments. How much will Leonardo pay towards the Passport credit card balance?
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OpenStudy (anonymous):
Love this question :)
OpenStudy (anonymous):
First, let set up some variables...
US Speedy = U
Expert = 4U
Passport = .10(U+4U) = .10(5U) = .50U
do you see where that all comes from in your word problems....
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
Great...
Now, 484 = U + 4U +.50U
solve for U - what do you get?
OpenStudy (anonymous):
all u do is add the Us up right
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OpenStudy (anonymous):
yes add up U's; but then you must divide to get the term U with NO coefficien
OpenStudy (anonymous):
ya so i got 88 right
OpenStudy (anonymous):
absolutely correct....so lets go back to our variable set ups
so speedy =88
what is express = 4u =
what is passport .5U =
OpenStudy (anonymous):
so what do i do divide 484 by 4? and then by .5
OpenStudy (anonymous):
no wait thats not right
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OpenStudy (anonymous):
4U = 4(88) = ????
OpenStudy (anonymous):
352
OpenStudy (anonymous):
you are now just replacing the variable U by the number you calculated of 88
OpenStudy (anonymous):
ooooo ok
OpenStudy (anonymous):
so its 44?
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