# understanding basic trick in math problem

i would like to know what is asked in the following question:

A shopkeeper marks his goods at $20$% profit and gives discount of $5$%,i would like to understand what is main tricky in this problem,gives discount of $5$% is it same as for example original cost was $100$ and after discount became $95$, but marks goods at $20$ percent,it means that after he got $20$% percent profit,he decrease price by $5$ %?thanks in advance

• Does the 20% profit come after the discount or before the discount? There is some ambiguity in the statement of the problem. – JB King Aug 12 '13 at 22:05

If he buys something for 100, the final price is:$$P=100\times 1.20 \times 0.95$$no matter which is multiplied first...