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   Application- Systems of Equations

 

Ryan buys 2 apples and 3 bananas for$3.00.Reid buys 4 apples and 8 bananas for $7 from the same store.How much would it cost to buy 3 bananas and 3 apples?

 

 

 

That is all the information they gave me and it is really hard so i don't really knoow how to do it.

 Nov 21, 2016
edited by Guest  Nov 21, 2016
edited by Guest  Nov 21, 2016
 #1
avatar+37084 
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I think you left some information out of your question......???

 Nov 21, 2016
 #2
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 Application- Systems of Equations

 

Ryan buys 2 apples and 3 bananas for$3.00.Reid buys 4 apples and 8 bananas from the same store.How much would it cost to buy 3 bananas and 3 apples?

 

 

 

That is all the information they gave me and it is really hard so i don't really knoow how to do it.

 Nov 21, 2016
 #3
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How much did the 4 apples and 8 bananas cost?

 Nov 21, 2016
edited by Guest  Nov 21, 2016
 #4
avatar+37084 
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You need more information   ... like the price of the 4 apples 8 bananas.....o/w all you can say is 3 bananas and 3 apples will cost more than $3.00

 Nov 21, 2016
 #5
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Ryan buys 2 apples and 3 bananas for$3.00.Reid buys 4 apples and 8 bananas for $7 from the same store.How much would it cost to buy 3 bananas and 3 apples?

 

 

 

That is all the information they gave me and it is really hard so i don't really knoow how to do it.

 Nov 21, 2016
 #6
avatar+37084 
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NOW you've added the price info needed.....

 Nov 21, 2016
 #7
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so whats the answer pleaselaugh

 Nov 21, 2016
 #8
avatar+37084 
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2a + 3b =3.00

and

4a + 8b = 7.00

 

Solve the first equation for 'a' then substitute this into the second equation....

a=(1/2)(3.00 - 3b)

 

4(1/2)(3.00-3b) + 8b=7.00

3.00-3b+8b=7

5b = 4

b=4/5     (price of banana)

 

2a + 3(4/5) = 3.00

2a + 12/5 =3.00

2a=3.00 - 12/5 = .6

a=.3                             Bananas cost 80 cents  apples cost 30 cents

3 banans and 3 apples would be  $3.30

 Nov 21, 2016
 #9
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so what are the steps to get the answer for 2a+3b=3.00 and 4a+8b=7.00

step by step.

 Nov 23, 2016

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