Sheet A has
Col A: Inventory code
Col B: Description
Col C: Quantity

Sheet B has
Col A: Inventory code
Col B: Description
Col C: Quantity ( both sheets have same data but inventory code may be
different)

Sheet C required
Required: total quantity of sheet A and sheet B in Col. C of sheet C

Kindly help me to create a logical formula / vlook formula

Example

Sheet A

Col A Col B Col C
Inventory code Description Quantity
10001 pencil 25
10002 pen 50
10003 rubber 75

Sheet B
Col A Col B Col C
Inventory code Description Quantity
10001 pencil 25
10002 pen 50
10004 Duster 15


Sheet C
Col A Col B Col C
Inventory code Description Total Qty of sheet A & Sheet B
10001 pencil ? ( total required with the help of vlok
10002 pen ?
10003 rubber ?
10004 Duster ?
zafar