IBPS Government Jobs Exams Numerical Ability Profit and Loss

A shopkeeper sold an item at 20% profit and another item at 10% loss. If the cost price of both the items is same, find the overall profit percent. A) 7.55% B) 6% C) 5% D) 6.5%

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I got an easy solution
x1=20
x2=10
profit=(x1-x2)/2 =(20-10)/2=5%

You can solve this type of problem using it.
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