SOLUTION: a trader bought 600 biscuits at £1000. 20% of them were stolen and he sold the rest at 10 for £25. find the loss or gain?

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Question 1066277: a trader bought 600 biscuits at £1000. 20% of them were stolen and he sold the rest at 10 for £25. find the loss or gain?
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
20% were stolen, or 120 of them
480 left, and at 10 per 25 pounds, that is 1 per 2.5 pounds or 480 for 1200 pounds, using property of proportions.
He paid 1000 pounds for everything, so the profit was 200 pounds.
Answer by ikleyn(52797)   (Show Source): You can put this solution on YOUR website!
.
a trader bought 600 biscuits at £1000. 20% of them were stolen and he sold the rest at 10 for £25. find the loss or gain?
~~~~~~~~~~~~~~~~~~~~~~~~~~ 

20% of 600 is 0.2*600 = 120.


Hence, 120 biscuits were stolen and 600 - 120 = 480 were sold at  10 for  £25.


So, the trader collected  =  £1200.


He gained  £1200 - £1000 =  £200.


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