A shopkeeper offers a pen for free with every dozen pens. Calculate % discount offered by the shopkeeper. The price of all the pens is the same.( rounded off to one decimal place)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 7.6 Percent
Given that
A shopkeeper offers a pen for free with every 12 pens
Let the cost of a pen be Rs. 1
so, the cost of 12 pens is Rs. 12
According to the question
The discount % = [Free pen/( free with every 12 pens)] × 100
= [1/(1 + 12)] × 100 = 100/13 = 7.6%