The following information is available for the year ended 31 December 2004 for a trader who does not keep proper
accounting records:
$
Inventories at 1 January 2004 38,000
Inventories at 31 December 2004 45,000
Purchases 637,000
Gross profit percentage on sales 30%
Based on this information, what was the trader’s sales figure for the year?
A $900,000
B $819,000
C $920,000
D $837,200

A 记住公式sales=cogs+gross profit

38,000 + 637,000 – 45,000 = 630,000 x 10/7 = 900,000