If gross profit on sale is 20% and cost of goods sold is $2,500,What will be amount of sales?

Sales               =  Cost of goods sold x100/80

                        = $2500 x100/80

                        = $3125

Generally20% on Sales means  25% on Costs

25% on sales means331/3 % on Costs

(The area of study is mainly on Costing)

sales - COGS =2500

GROSS is20% of cogs 

thus 

gross is80% of sales 

because  

100% -20% =80% 

thus 

sales =2500 /80% 

=3125 $ 

Yes, $3,125

Sales amount is $3,125/-

Obviously it is $3125.

IT IS3125

Answer is $3125