7 An organisation’s stock records for last month show the following transactions in respect of one item:

Date Receipts Issues Stock

(units) (units) (units)

1st 300

5th 100 200

13th 600 800

20th 300 500

28th 200 300

The opening stock was valued at a total cost of £9,300 and all receipts on the 13th were purchased at a cost of £33

per unit.

The organisation uses the weighted average method of valuation and calculates a new weighted average after each　stores receipt.

What was the total value of the closing stock?

A £9,500

B £9,700

C £9,750

D £9,900

C

看不懂题目，

daan

如何计算出来的