Sum in a Query (Balance)

Experts,
I have a query with [FacilityAmount] and [Amount].  
There are 3 Facilities and each has an [Amount] (this is the amount drawn)
I need to show the [AvailableAmount] for each Facility, which is found by [FacilityAmount] and [Amount]
I think it is quite simple but I dont know how to do it.

I think it will be more clear if you open the attached db and look at the query.

query picDatabase1.accdb
pdvsaProject financeAsked:
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pdvsaProject financeAuthor Commented:
I basically need a sum for [Amount] (this is the amount drawn) but for each [Facility]
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Rey Obrero (Capricorn1)Commented:
see query1
Database1Rev.accdb
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pdvsaProject financeAuthor Commented:
Hi Rey,

I am not sure if the calc is correct because the FacilityAmount is as follows:
Uncovered      $2,915,000,000.00
Nexi             $2,000,000,000.00
JBIC                     $2,500,000,000.00
      
but in the query1 (below) it shows a sum of the FacilityAmount (basically doubling it):  
ie:  JBIC shows 5Billion and it should be 2.5Billiion (as above) and a SumOfAvailable should be: 2.5 - the sum  tblDisbursement_Amounts where it = JBIC

Type      SumOfFacilityAmount      SumOfAvailable
JBIC                $5,000,000,000.00      $4,877,000,000.00
NEXI         $4,000,000,000.00      $3,905,000,000.00
Uncovered      $5,830,000,000.00$5,690,000,000.00

thank you
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Rey Obrero (Capricorn1)Commented:
open first the query Q1
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Rey Obrero (Capricorn1)Commented:
see Q2 and query2
Database1Rev.accdb
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pdvsaProject financeAuthor Commented:
Rey:  thank you sir...Can you look at that query2 once more?  

example:  JBIC available should be :  2.5B - sum(25MM+98MM) = 2.377B

The facility amount doesnt appear to be correct.  Ie: JBIC shows 5B and it should be 2.5B.  The sumOfAmount is correct though.
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pdvsaProject financeAuthor Commented:
all of the [FacilityAmounts] appear to be doubled and not just JBIC
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Rey Obrero (Capricorn1)Commented:
ok, first create a query

SELECT tblDisbursement_Amounts.Type, Sum(tblDisbursement_Amounts.Amount) AS SumOfAmount
FROM tblDisbursement_Amounts
WHERE (((tblDisbursement_Amounts.DisbRecdDate) Is Not Null))
GROUP BY tblDisbursement_Amounts.Type;

save as Q_Disbursement

then create this query

SELECT Q_Disbursement.Type, tblFacilityAmounts.FacilityAmount, Q_Disbursement.SumOfAmount, [FacilityAmount]-[SumOfAmount] AS Available
FROM Q_Disbursement INNER JOIN tblFacilityAmounts ON Q_Disbursement.Type = tblFacilityAmounts.Type;


check the result
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pdvsaProject financeAuthor Commented:
Wow that works.  Now I need to figure out how you did it.  

thank you
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